Trump is obviously no fan of Biden, but Obama and his veep also have a famously complex relationship, only made more so after Obama helped nudge Biden to quit the presidential race last summer. Surely Obama feels some frustration that Biden fumbled a possibly winnable race; maybe he couldn’t help spill to his sworn enemy?

All five living U.S. presidents are attending Jimmy Carter's funeral at the National Cathedral in Washington, D.C., on Thursday, a rare occurrence that marks the first time the leaders have gathered publicly since 2018.