U.S. Senator Lisa Murkowski arrives for weekly Senate policy luncheon with President Donald Trump on Capitol Hill in Washington, U.S., May 19, 2020. REUTERS/Yuri Gripas

U.S. Senator Lisa Murkowski takes pictures of the media as she arrives for weekly Senate policy luncheon with President Donald Trump on Capitol Hill in Washington, U.S., May 19, 2020. REUTERS/Yuri Gripas

Sen. John Cornyn (R-TX) speaks to reporters before attending a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Lindsey Graham (R-SC) speaks to reporters after a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Mitt Romney (R-UT) attends a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Lindsey Graham (R-SC) speaks to reporters after a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Rick Scott (R-FL) attends a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Tim Scott (R-SC) attends a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Bill Cassidy (R-LA) attends a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Lindsey Graham (R-SC) speaks to reporters after a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Marsha Blackburn (R-TN) attends a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Senate Majority Leader Mitch McConnell (R-KY) attends a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Kelly Loeffler (R-GA) attends a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Rand Paul (R-KY) leaves a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Senate Majority Leader Mitch McConnell (R-KY) attends a luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Richard Burr (R-NC) walks to a republican luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott TPX IMAGES OF THE DAY

Sen. Richard Burr (R-NC) walks to a republican luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Richard Burr (R-NC) walks to a republican luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Richard Burr (R-NC) walks to a republican luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Richard Burr (R-NC) walks to a republican luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

Sen. Richard Burr (R-NC) walks to a republican luncheon on Capitol Hill in Washington, U.S., May 14, 2020. REUTERS/Erin Scott

An empty coat rack stands in the empty hallway where U.S. Senate Republicans would normally gather for their weekly luncheon at the Capitol during the coronavirus disease (COVID-19) outbreak in Washington, U.S., April 15, 2020. REUTERS/Jonathan Ernst

An empty coat rack and hand sanitizing station stand in the empty hallway where U.S. Senate Republicans would normally gather for their weekly luncheon at the Capitol during the coronavirus disease (COVID-19) outbreak in Washington, U.S., April 15, 2020. REUTERS/Jonathan Ernst

Sen. Lisa Murkowski (R-AK) and Sen. Shelley Moore Capito (R-WV) along with her husband Charlie chat after leaving a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Sen. Cindy Hyde-Smith (R-MS) carrying a bottle of hand sanitizer, leaves a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Sen. Steve Daines (R-MT) and Sen. Lindsey Graham (R-SC) head to an elevator after a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Sen. Rob Portman (R-OH) leaves a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Sen. John Kennedy (R-LA) leaves a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Sen. John Cornyn (R-TX) speaks to media after leaving a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

U.S. Senate Majority Leader Mitch McConnell (R-KY) speaks to media outside a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Sen. Mitt Romney (R-UT) walks past media to a luncheon to work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Sen. Richard Shelby (R-AL) and Sen. Kelly Loeffler (R-GA) get in an elevator after a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Sen. Susan Collins (R-ME) speaks to media outside a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

U.S. Senate Majority Leader Mitch McConnell (R-KY) walks from a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Sen. Richard Shelby (R-AL) and Sen. Kelly Loeffler (R-GA) get in an elevator after a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

U.S. Senate Majority Leader Mitch McConnell (R-KY) speaks to media outside a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Sen. Mitt Romney (R-UT) walks past media to a luncheon to work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

U.S. Senate Majority Leader Mitch McConnell (R-KY) speaks to media outside a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Sen. Susan Collins (R-ME) gets in an elevator after speaking to media outside a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Sen. Richard Shelby (R-AL) and Sen. Kelly Loeffler (R-GA) get in an elevator after a luncheon meeting to wrap up work on coronavirus economic aid legislation to prevent the spread of coronavirus disease (COVID-19) in Washington, U.S., March 21, 2020. REUTERS/Mary F. Calvert

Senator Ted Cruz (R-TX) speaks to news reporters and staff members while walking down a hallway ahead of a Senate luncheon meeting on response to the coronavirus disease (COVID-19) outbreak in Washington, U.S., March 19, 2020. REUTERS/Tom Brenner

Unoccupied chairs and tables remain outside a closed cafeteria in the Dirksen Senate Office Building, ahead of a Senate luncheon meeting on response to the coronavirus disease (COVID-19) outbreak in Washington, U.S., March 19, 2020. REUTERS/Tom Brenner

Senator John Barrasso (R-WY) walks down a hallway ahead of a Senate luncheon meeting on response to the coronavirus disease (COVID-19) outbreak in Washington, U.S., March 19, 2020. REUTERS/Tom Brenner

Senator Richard Shelby (R-AL) walks down a hallway ahead of a Senate luncheon meeting on response to the coronavirus disease (COVID-19) outbreak in Washington, U.S., March 19, 2020. REUTERS/Tom Brenner

Senator Mitt Romney (R-UT) walks down a hallway ahead of a Senate luncheon meeting on response to the coronavirus disease (COVID-19) outbreak in Washington, U.S., March 19, 2020. REUTERS/Tom Brenner

Senator Susan Collins (R-ME) speaks to news reporters and staff members while walking down a hallway ahead of a Senate luncheon meeting on response to the coronavirus disease (COVID-19) outbreak in Washington, U.S., March 19, 2020. REUTERS/Tom Brenner

Senator Lindsey Graham (R-SC) speaks to news reporters ahead of a Senate luncheon meeting on response to the coronavirus disease (COVID-19) outbreak in Washington, U.S., March 19, 2020. REUTERS/Tom Brenner

Senator Lindsey Graham (R-SC) speaks to news reporters ahead of a Senate luncheon meeting on response to the coronavirus disease (COVID-19) outbreak in Washington, U.S., March 19, 2020. REUTERS/Tom Brenner

Senator Lindsey Graham (R-SC) speaks to news reporters ahead of a Senate luncheon meeting on response to the coronavirus disease (COVID-19) outbreak in Washington, U.S., March 19, 2020. REUTERS/Tom Brenner

Senator Mitt Romney (R-UT) walks down a hallway ahead of a Senate luncheon meeting on response to the coronavirus disease (COVID-19) outbreak in Washington, U.S., March 19, 2020. REUTERS/Tom Brenner

Senate Majority Leader Mitch McConnell (R-KY) walks down a hallway ahead of a Senate luncheon meeting on response to the coronavirus disease (COVID-19) outbreak in Washington, U.S., March 19, 2020. REUTERS/Tom Brenner

Senate Majority Whip John Thune (R-SD) walks down a hallway ahead of a Senate luncheon meeting on response to the coronavirus disease (COVID-19) outbreak in Washington, U.S., March 19, 2020. REUTERS/Tom Brenner

The shadow of U.S. Senate Majority Leader Mitch McConnell (R-KY) is projected onto a wall as House Speaker Nancy Pelosi (D-CA) passes by before delivering remarks during the Friends of Ireland luncheon event on Capitol Hill in Washington, U.S., March 12, 2020. REUTERS/Tom Brenner

U.S. Senate Majority Leader Mitch McConnell (R-KY) delivers remarks during the Friends of Ireland luncheon event on Capitol Hill in Washington, U.S., March 12, 2020. REUTERS/Tom Brenner

U.S. Senate Majority Leader Mitch McConnell (R-KY) delivers remarks during the Friends of Ireland luncheon event on Capitol Hill in Washington, U.S., March 12, 2020. REUTERS/Tom Brenner

U.S. Senate Majority Leader Mitch McConnell (R-KY) delivers remarks during the Friends of Ireland luncheon event on Capitol Hill in Washington, U.S., March 12, 2020. REUTERS/Tom Brenner

U.S. Senate Majority Leader Mitch McConnell (R-KY) delivers remarks during the Friends of Ireland luncheon event on Capitol Hill in Washington, U.S., March 12, 2020. REUTERS/Tom Brenner

U.S. House Speaker Nancy Pelosi (D-CA) exchanges an elbow bump, exhibiting caution amid scoronavirus outbreak concerns at a Friends of Ireland luncheon on Capitol Hill in Washington, U.S., March 12, 2020. REUTERS/Tom Brenner

U.S. House Speaker Nancy Pelosi (D-CA) holds up a crystal gavel as she addresses a Friends of Ireland luncheon on Capitol Hill in Washington, U.S., March 12, 2020. REUTERS/Tom Brenner

U.S. Senate Minority Leader Chuck Schumer (D-NY) attends a Friends of Ireland luncheon on Capitol Hill in Washington, U.S., March 12, 2020. REUTERS/Tom Brenner