Republican presidential candidate former President Donald Trump is moved from the stage at a campaign rally, Saturday, July 13, 2024, in Butler, Pa. (AP Photo/Evan Vucci)

Police snipers return fire after shots were fired while Republican presidential candidate former President Donald Trump was speaking at a campaign event in Butler, Pa., on Saturday, July 13, 2024. (AP Photo/Gene J. Puskar)

A campaign rally site for Republican presidential candidate former President Donald Trump is empty and littered with debris Saturday, July 13, 2024, in Butler, Pa. (AP Photo/Evan Vucci)

Republican presidential candidate former President Donald Trump is covered by U.S. Secret Service agents at a campaign rally, Saturday, July 13, 2024, in Butler, Pa. (AP Photo/Evan Vucci)

Republican presidential candidate former President Donald Trump is escorted to a motorcade following an attempted assassination at a campaign event in Butler, Pa., on Saturday, July 13, 2024. (AP Photo/Gene J. Puskar)

Republican presidential candidate former President Donald Trump is surrounded by U.S. Secret Service agents as he is helped off the stage at a campaign rally in Butler, Pa., Saturday, July 13, 2024. (AP Photo/Gene J. Puskar)

Republican presidential candidate former President Donald Trump is helped off the stage at a campaign event in Butler, Pa., on Saturday, July 13, 2024. (AP Photo/Gene J. Puskar)

Republican presidential candidate former President Donald Trump is helped off the stage at a campaign event in Butler, Pa., on Saturday, July 13, 2024. (AP Photo/Gene J. Puskar)

Republican presidential candidate former President Donald Trump is surrounded by U.S. Secret Service at a campaign event in Butler, Pa., on Saturday, July 13, 2024. (AP Photo/Gene J. Puskar)