Vice President Kamala Harris waves before boarding Air Force Two as she departs on campaign travel to Milwaukee, Wisc., Tuesday, July 23, 2024 at Andrews Air Force Base, Md. (Kevin Mohatt/Pool via AP)

Vice President Kamala Harris waves as she boards Air Force Two following a campaign event, in Milwaukee, Wis., Tuesday, July 23, 2024. (Kevin Mohatt/Pool via AP)

Vice President Kamala Harris campaigns for President as the presumptive Democratic candidate during an event at West Allis Central High School, Tuesday, July 23, 2024, in West Allis, Wis. (AP Photo/Kayla Wolf)

Vice President Kamala Harris campaigns for President as the presumptive Democratic candidate during an event at West Allis Central High School, Tuesday, July 23, 2024, in West Allis, Wis. (AP Photo/Kayla Wolf)

Vice President Kamala Harris poses for a selfie with Wisconsin Lt. Gov. Sara Rodriguez and Sen. Tammy Baldwin, D-Wisc., as she arrives in Milwaukee, Wisc., Tuesday, July 23, 2024. (Kevin Mohatt/Pool via AP)

Supports hold up signs in support of Vice President Kamala Harris as she campaigns for President as the presumptive Democratic candidate during an event at West Allis Central High School on Tuesday, July 23, 2024, in West Allis, Wis. (AP Photo/Kayla Wolf)