FILE - Presidential candidate Robert F. Kennedy Jr., speaks during a campaign event at the Adrienne Arsht Center for the Performing Arts of Miami-Dade County, Thursday, Oct. 12, 2023, in Miami. (AP Photo/Wilfredo Lee, File)
Presidential candidate Robert F. Kennedy Jr. right, waves on stage with Nicole Shanahan, after announcing her as his running mate, during a campaign event, Tuesday, March 26, 2024, in Oakland, Calif. (AP Photo/Eric Risberg)
Supporters of Presidential candidate Robert F. Kennedy Jr. gather during a campaign event, Tuesday, March 26, 2024, in Oakland, Calif. (AP Photo/Eric Risberg)
Buttons are displayed during a campaign event for Presidential candidate Robert F. Kennedy Jr., Tuesday, March 26, 2024, in Oakland, Calif. (AP Photo/Eric Risberg)
Presidential candidate Robert F. Kennedy Jr. right, is joined on the stage by his wife Cheryl Hines during a campaign event, Tuesday, March 26, 2024, in Oakland, Calif. (AP Photo/Eric Risberg)
From left, to right, Jacob Strumwasser, Nicole Shanahan, Presidential candidate Robert F. Kennedy Jr. and Cheryl Hines stand together on stage during a campaign event, Tuesday, March 26, 2024, in Oakland, Calif. (AP Photo/Eric Risberg)
Supporters of Presidential candidate Robert F. Kennedy Jr. gather during a campaign event, Tuesday, March 26, 2024, in Oakland, Calif. (AP Photo/Eric Risberg)
A stage is set at a campaign event for presidential candidate Robert F. Kennedy Jr., Tuesday, March 26, 2024, in Oakland, Calif. Kennedy is expected to announce a running mate. (AP Photo/Eric Risberg)
Presidential candidate Robert F. Kennedy Jr., right, stands on the stage before a campaign event where he is expected to announce a running mate, Tuesday, March 26, 2024, in Oakland, Calif. (AP Photo/Eric Risberg)
Supporters of Presidential candidate Robert F. Kennedy Jr. gather during a campaign event, Tuesday, March 26, 2024, in Oakland, Calif. (AP Photo/Eric Risberg)