![Jacquelyn Martin FILE - Rep. Adam Kinzinger, R-Ill., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol Hill in Washington on Dec. 19, 2022. The former congressman, Kinzinger, endorsed President Joe Biden on Wednesday, June 26, 2024, giving the Democrat a prominent new ally in his high-stakes campaign to win over moderate Republicans and independents this fall. (AP Photo/Jacquelyn Martin, File)](https://mapi.associatedpress.com/v2/items/f57517aee0c442b3a792c1bbe48695eb/preview/preview.jpg?s=680x)
FILE - Rep. Adam Kinzinger, R-Ill., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol Hill in Washington on Dec. 19, 2022. The former congressman, Kinzinger, endorsed President Joe Biden on Wednesday, June 26, 2024, giving the Democrat a prominent new ally in his high-stakes campaign to win over moderate Republicans and independents this fall. (AP Photo/Jacquelyn Martin, File)
![Jacquelyn Martin FILE -Rep. Adam Kinzinger, R-Ill., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol holds its final meeting on Capitol Hill in Washington, Dec. 19, 2022. Kinzinger, former congressman, endorsed President Joe Biden on Wednesday, giving the Democrat a prominent new ally in his high-stakes campaign to win over moderate Republicans and independents this fall. (AP Photo/Jacquelyn Martin, File)](https://mapi.associatedpress.com/v2/items/cf2b9680bcfe43e1a497123a656bdc0f/preview/preview.jpg?s=680x)
FILE -Rep. Adam Kinzinger, R-Ill., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol holds its final meeting on Capitol Hill in Washington, Dec. 19, 2022. Kinzinger, former congressman, endorsed President Joe Biden on Wednesday, giving the Democrat a prominent new ally in his high-stakes campaign to win over moderate Republicans and independents this fall. (AP Photo/Jacquelyn Martin, File)