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?

U.S. President-elect Donald Trump greeted and shook hands on Thursday with his estranged former vice president Mike Pence, as current and former administrations gathered at the funeral of former President Jimmy Carter in Washington.