President Joe Biden waves after speaking to supporters at a campaign event at Renaissance High School, Friday, July 12, 2024. (AP Photo/Jacquelyn Martin)

President Joe Biden walking off stage after speaking to supporters at a campaign event at Renaissance High School, Friday, July 12, 2024. (AP Photo/Jacquelyn Martin)

President Joe Biden speaks to supporters at Garage Grill & Fuel Bar during a campaign stop in Northville, Mich., Friday July 12, 2024. (AP Photo/Jacquelyn Martin)

President Joe Biden speaks at Renaissance High School, Friday, July 12, 2024, during a campaign event in Detroit. (AP Photo/Jacquelyn Martin)

President Joe Biden, joined by President of Ukraine Volodymyr Zelenskyy, speaks during an event on the Ukraine Compact on the sidelines of the NATO Summit in Washington, Thursday, July 11, 2024. Biden launched the Ukraine Compact, signed by 25 countries and the European Union, as part of a commitment to Ukraine's long term security. (AP Photo/Susan Walsh)