Chicago Police Supt. Larry Snelling speaks to reporters in Chicago Tuesday, Aug. 13, 2024. Snelling appeared with city officials and Derek Mayer, left, U.S. Secret Service deputy special agent in charge, to talk about the city's readiness to host the Democratic National Convention next week. (AP Photo/Teresa Crawford)

Derek Mayer, U.S. Secret Service Deputy Special Agent in Charge, speaks to reporters in Chicago, Tuesday, Aug. 13, 2024. Mayer appeared with city officials to talk about the city's readiness to host the Democratic National Convention next week. (AP Photo/Teresa Crawford)

Protesters march passed a police line prior to the start of the Democratic National Convention Sunday, Aug. 18, 2024, in Chicago. (AP Photo/Julio Cortez)

People walk past a display inside the United Center as preparations are made for next week's 2024 Democratic National Convention in Chicago, Friday, Aug. 16, 2024.(AP Photo/Pablo Martinez Monsivais)

Illinois Gov. JB Pritzker, right, stands with Chicago Mayor Brandon Johnson during a Democratic National Convention security briefing at the U.S. Secret Service's Chicago Field Office Thursday, July 25, 2024, in Chicago. (AP Photo/Erin Hooley)

Democratic presidential nominee Vice President Kamala Harris waving during her arrival at O'Hare International Airport in Chicago on Sunday, Aug. 18, 2024. (AP Photo/Brynn Anderson)

Protesters demonstrate prior to the Democratic National Convention Sunday, Aug. 18, 2024, in Chicago. (AP Photo/Alex Brandon)

Protesters march prior to the start of the Democratic National Convention Sunday, Aug. 18, 2024, in Chicago. (AP Photo/Julio Cortez)

Protesters march prior to the start of the Democratic National Convention Sunday, Aug. 18, 2024, in Chicago. (AP Photo/Alex Brandon)

A police line goes around a monument to John Alexander Morgan in Grant Park prior to the start of the Democratic National Convention Sunday, Aug. 18, 2024, in Chicago. (AP Photo/Frank Franklin II)

Activist Liz Rathburn, right, talks with University of Illinois-Chicago student Arsalan Zahid on campus Wednesday, Aug. 14, 2024, about two marches in support of Palestine, during the Democratic National Convention next week in Chicago. (AP Photo/Charles Rex Arbogast)

Activist Liz Rathburn hands out a flyer on the University of Illinois-Chicago campus Wednesday, Aug. 14, 2024, about two marches in support of Palestine, during the Democratic National Convention next week in Chicago. (AP Photo/Charles Rex Arbogast)

A street sign with the Democratic National Convention acronym featured sits in the campaign office of Chicago Mayor Brandon Johnson as he responds to a question during an interview with The Associated Press on Thursday, Aug. 15, 2024, just days before the start of the Democratic National Convention in Chicago. (AP Photo/Charles Rex Arbogast)

Activist Liz Rathburn holds flyers on the University of Illinois-Chicago campus Wednesday, Aug. 14, 2024, about two marches in support of Palestine, during the Democratic National Convention next week in Chicago. (AP Photo/Charles Rex Arbogast)

Jaime Harrison, Democratic National Committee chair, watches as preparations are made before the upcoming Democratic National Convention, Thursday, Aug. 15, 2024, in Chicago. (AP Photo/Alex Brandon)

Protesters march passed a police line prior to the start of the Democratic National Convention Sunday, Aug. 18, 2024, in Chicago. (AP Photo/Frank Franklin II)

Ukrainian supporters protest downtown prior to the start of the Democratic National Convention Sunday, Aug. 18, 2024, in Chicago. (AP Photo/Frank Franklin II)

Protesters march passed a police line prior to the start of the Democratic National Convention Sunday, Aug. 18, 2024, in Chicago. (AP Photo/Frank Franklin II)