People view the flag-draped casket of Rep. John Lewis, D-Ga., as he lies in state on the East Front Steps of the Capitol in Washington, Monday, July 27, 2020. (AP Photo/Patrick Semansky)

House Speaker Nancy Pelosi of Calif., left, and Senate Majority Leader Mitch McConnell of Ky., talk prior to a memorial service to honor the late Rep. John Lewis, D-Ga., in the Capitol Rotunda, Monday, July 27, 2020, in Washington. (Shawn Thew/Pool via AP)

Members of the Congressional Black Caucus, say farewell at the conclusion of a service for the late Rep. John Lewis, D-Ga., a key figure in the civil rights movement and a 17-term congressman from Georgia, as he lies in state at the Capitol in Washington, Monday, July 27, 2020. (AP Photo/J. Scott Applewhite, Pool)

The hearse with the flag-draped casket of Rep. John Lewis, D-Ga., drives on 16th Street, renamed Black Lives Matter Plaza near the White House, Monday, July 27, 2020, in Washington. (AP Photo/Alex Brandon, Pool)

Rep. Terri Sewell, D-D-Ala., and other members of the Congressional Black Caucus, depart at the conclusion of a service for the late Rep. John Lewis, a key figure in the civil rights movement and a 17-term congressman from Georgia, as he lies in state at the Capitol in Washington, Monday, July 27, 2020. (AP Photo/J. Scott Applewhite, Pool)

The flag-draped casket of Rep. John Lewis, D-Ga., is carried by a joint services military honor guard to the hearse, Monday, July 27, 2020, at Andrews Air Force Base, Md. (AP Photo/Alex Brandon, Pool)

Senate Minority Leader Chuck Schumer, D-N.Y., left, Sen. Tim Scott, R-S.C., right, attend a memorial service for the late Rep. John Lewis, D-Ga., a key figure in the civil rights movement and a 17-term congressman from Georgia, as he lies in state at the Capitol in Washington, Monday, July 27, 2020. (Shawn Thew/Pool via AP)

Democratic presidential candidate, former Vice President Joe Biden, touches the flag-draped casket of the late Rep. John Lewis, D-Ga., a key figure in the civil rights movement and a 17-term congressman from Georgia, as he lies in state at the Capitol in Washington, Monday, July 27, 2020. (AP Photo/J. Scott Applewhite, Pool)

House Speaker Nancy Pelosi of Calif., second from left, attends a memorial service as the flag-draped casket of Rep. John Lewis, D-Ga., lies in state at the Capitol Rotunda, Monday, July 27, 2020, in Washington. (Shawn Thew/Pool via AP)

Senate Majority Leader Mitch McConnell of Ky., speaks during a memorial service as the flag-draped casket of Rep. John Lewis, D-Ga., lies in state at the Capitol Rotunda, Monday, July 27, 2020, in Washington. (Shawn Thew/Pool via AP)

A hearse with the flag-draped casket of Rep. John Lewis, D-Ga., pauses in front of the Lincoln Memorial, Monday, July 27, 2020, in Washington, on way to the Capitol. (AP Photo/Jose Luis Magana)

Sen. Tim Scott, R-S.C., and Sen. Chuck Schumer, D-N.Y., pay their respects at the flag-draped casket of Rep. John Lewis, D-Ga., on Monday, July 27, 2020 in the Rotunda of the U.S. Capitol in Washington. (Matt McClain/Pool via AP)

Karen Pence, from left, Vice President Mike Pence, Housing and Urban Development Secretary Ben Carson and his wife Candy Carson stand in front of the flag-draped casket of Rep. John Lewis, D-Ga., as he lies in state on the East Front Steps of the Capitol in Washington, Monday, July 27, 2020. (AP Photo/Patrick Semansky)

The hearse carrying the late Rep. John Lewis, D-Ga., moves along a section of 16th Street that's been renamed Black Lives Matter Plaza in Washington, Monday, July 27, 2020, in Washington. (AP Photo/Pablo Martinez Monsivais)

A hearse with the flag-draped casket of Rep. John Lewis, D-Ga., turns onto the street renamed Black Lives Matter Plaza near the White House Monday, July 27, 2020, in Washington. (AP Photo/Alex Brandon, Pool)

The flag-draped casket of civil rights pioneer Rep. John Lewis, D-Ga., who died July 17, is carried by a U.S. military honor guard to the center of the U.S. Capitol Rotunda to lie in state in Washington, Monday, July 27, 2020. (Jonathan Ernst/Pool via AP)

Members of the U.S. Capitol Police honor guard stand near the flag-draped casket of Rep. John Lewis, D-Ga., on Monday, July 27, 2020, in the Rotunda of the U.S. Capitol in Washington. (Matt McClain/Pool via AP)

A security guard peers into peers into the Capitol Rotunda as a memorial service for Rep. John Lewis, D- Ga., is held on Monday, July 27, 2020 on Capitol Hill in Washington. (Matt McClain/The Washington Post via AP, Pool)

A hearse with the flag-draped casket of Rep. John Lewis, D-Ga., pauses in front of the Lincoln Memorial, Monday, July 27, 2020, in Washington, on way to the Capitol. (AP Photo/Jose Luis Magana)

House Speaker Nancy Pelosi of Calif., speaks during a service for the late Rep. John Lewis, D-Ga., a key figure in the civil rights movement and a 17-term congressman from Georgia, as he lies in state at the Capitol in Washington, Monday, July 27, 2020. (AP Photo/J. Scott Applewhite, Pool)