It’s unclear which debate performance of Biden’s in particular set Trump off on this latest rant, but it’s not the first time he’s suggested the idea of a drug test.
Earlier this month, Trump claimed on Fox News:
I think there’s probably – possibly – drugs involved. That’s what I hear. I mean, there’s possibly drugs. I don’t know how you can go from being so bad where you can’t even get out a sentence…
In 2016, Trump also challenged Hillary Clinton to take a drug test before their third debate in the presidential election.
During a rally in Portsmouth, New Hampshire, he claimed:
Athletes, they make them take a drug test. We should take a drug test prior to the debate because I don’t know what’s going on with her. But at the beginning of her last debate, she was all pumped up at the beginning. And at the end … she could barely reach her car.