During a September 2024 event commemorating the 23rd anniversary of the 9/11 attacks, former President Joe Biden put on a Trump hat in what the White House said at the time was a show of unity.
In video of the Shanksville event, where the former president had been visiting with firefighters, Biden is seen chatting with a Trump supporter prior to putting on the cap.
Biden smiles as he puts on a Trump hat during a visit with firefighters in Pennsylvania.
— Oli London (@OliLondonTV) September 11, 2024
pic.twitter.com/3ySpMklygu
According to the book, "Original Sin: President Biden’s Decline, Its Cover-up, and His Disastrous Choice to Run Again," that was the last time Vice President Kamala Harris did an event with Biden prior to the 2024 election.
"What is he doing?" Harris reportedly asked her team, commenting on videos circulating of Biden wearing the hat. "This is completely unhelpful. And so unnecessary."
It took putting on a Trump hat for Kamala to wake up? ‘What is he doing?’ Harris asked her team, according to the book. ‘This is completely unhelpful. And so unnecessary.’ The Harris campaign decided they would no longer campaign with Biden in the future, according to the book,… pic.twitter.com/N53394gZZ3
— Karli Bonne’ 🇺🇸 (@KarluskaP) May 20, 2025
At the time, the Trump campaign seized on the moment, using it to take a jab at Harris.
"Kamala did so bad in last night's debate, Joe Biden just put on a Trump hat," the campaign said in one post.
🚨BREAKING: Kamala did so bad in last night's debate, Joe Biden just put on a Trump hat. pic.twitter.com/OzgCRKIbKp
— Trump War Room (@TrumpWarRoom) September 11, 2024
"Thanks for the support, Joe!" read another.
Thanks for the support, Joe! pic.twitter.com/GeNDXWEHVi
— Trump War Room (@TrumpWarRoom) September 11, 2024
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