United States President Donald J. Trump speaks during a meeting with Leo Varadkar, Ireland's prime minister in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump, right, speaks as Leo Varadkar, Ireland's prime minister, listens during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump, right, speaks as Leo Varadkar, Ireland's prime minister, listens during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump speaks during a meeting with Leo Varadkar, Ireland's prime minister in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump, right, speaks as Leo Varadkar, Ireland's prime minister, listens during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump speaks during a meeting with Leo Varadkar, Ireland's prime ministe rin the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump speaks during a meeting with Leo Varadkar, Ireland's prime minister in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump speaks during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Speaker of the United States House of Representatives Nancy Pelosi (Democrat of California) speaks during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Speaker of the United States House of Representatives Nancy Pelosi (Democrat of California) holds the arm of US President Donald J. Trump during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Speaker of the United States House of Representatives Nancy Pelosi (Democrat of California) holds the arm of US President Donald J. Trump during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Speaker of the United States House of Representatives Nancy Pelosi (Democrat of California) holds the arm of US President Donald J. Trump during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump kisses Speaker of the US House of Representatives Nancy Pelosi (Democrat of California) during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump's shadow is seen behind Speaker of the US House of Representatives Nancy Pelosi (Democrat of California) during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump speaks during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Speaker of the United States House of Representatives Nancy Pelosi (Democrat of California) holds the arm of US President Donald J. Trump during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump listens to Speaker of the United States House of Representatives Nancy Pelosi (Democrat of California) during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump listens to Speaker of the US House of Representatives Nancy Pelosi (Democrat of California) during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump's shadow is seen behind Speaker of the US House of Representatives Nancy Pelosi (Democrat of California) during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Speaker of the United States House of Representatives Nancy Pelosi (Democrat of California) speaks during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump speaks during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Leo Varadkar, Ireland's prime minister speaks during the Friends of Ireland luncheon at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump kisses Speaker of the US House of Representatives Nancy Pelosi (Democrat of California) during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump listens to Speaker of the US House of Representatives Nancy Pelosi (Democrat of California) during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Speaker of the United States House of Representatives Nancy Pelosi (Democrat of California) speaks during the Friends of Ireland luncheon with Leo Varadkar, Ireland's prime minister at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Leo Varadkar, Ireland's prime minister speaks during the Friends of Ireland luncheon at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Leo Varadkar, Ireland's prime minister presents to Speaker of the United States House of Representatives Nancy Pelosi (Democrat of California) a copy of letter signed by 300 congressmen in 1937 to congratulate Ireland on its new constitution during the Friends of Ireland luncheon at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Leo Varadkar, Ireland's prime minister presents a copy of letter signed by 300 congressmen in 1937 to congratulate Ireland on its new constitution to Speaker of the United States House of Representatives Nancy Pelosi (Democrat of California) during during the Friends of Ireland luncheon at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Leo Varadkar, Ireland's prime minister presents to Speaker of the United States House of Representatives Nancy Pelosi (Democrat of California) a copy of letter signed by 300 congressmen in 1937 to congratulate Ireland on its new constitution during the Friends of Ireland luncheon at the U.S. Capitol in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump, right, speaks as Leo Varadkar, Ireland's prime minister, listens during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump speaks during a meeting with Leo Varadkar, Ireland's prime ministe rin the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump speaks during a meeting with Leo Varadkar, Ireland's prime ministe rin the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump speaks during a meeting with Leo Varadkar, Ireland's prime ministe rin the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump speaks during a meeting with Leo Varadkar, Ireland's prime minister in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Leo Varadkar, Ireland's prime minister,speaks as United States President Donald J. Trump, right, listens during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump, right, speaks as Leo Varadkar, Ireland's prime minister, listens during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump (R) shakes hands with Taoiseach of Ireland Leo Varadkar (L) during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump, right, speaks as Leo Varadkar, Ireland's prime minister, listens during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump, right, speaks as Leo Varadkar, Ireland's prime minister, listens during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump (R) shakes hands with Taoiseach of Ireland Leo Varadkar (L) during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump speaks during a meeting with Leo Varadkar, Ireland's prime minister in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump, right, speaks as Leo Varadkar, Ireland's prime minister, listens during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump, right, speaks as Leo Varadkar, Ireland's prime minister, listens during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

Leo Varadkar, Ireland's prime minister looks on in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide

United States President Donald J. Trump, right, speaks as Leo Varadkar, Ireland's prime minister, listens during a meeting in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, March 14, 2019. Credit: Olivier Douliery / Pool via CNP | usage worldwide