Months after cocaine was discovered at the White House, Donald Trump is calling for his rival Joe Biden to submit to a drug test before they have any debates. 

Biden looked "higher than a kite" during his State of the Union address, Trump told radio host Hugh Hewitt.

“I don't know what he's using, but that was not — hey, he was higher than a kite,” Trump said.

Trump: Biden on drugs

Trump hinted that Biden is using cocaine, pointing to the discovery of the drug at the White House last year, which sparked a frenzy of speculation.

“You know that white stuff that they happen to find, which happened to be cocaine, in the White House? I don't know. I think something's going on there,” Trump said.

Biden's State of the Union speech startled many with its furious and partisan tone, but the angry performance was widely praised by Democrats, who said it put to rest doubts about Biden's age and stamina.

Biden was slammed for garbling the name of the Georgia nursing student Laken Riley, who was murdered by an illegal immigrant.

Trump suggested that Biden was using drugs to stay alert, noting that he looks tired most of the time.

"I watched the State of the Union, he was all jacked up at the beginning, by the end he was fading fast, there's something going on there," Trump said.

Will Biden debate?

Biden, who is campaigning heavily on the theme of defending democracy, has yet to accept Trump's challenge to debate in front of the American people.

Trump said that drug tests should be mandatory for any debates to occur.

"I think debates, with him at least, should be drug tested," Trump told Hewitt.

Biden has refused to take a cognitive test, despite mounting public pressure to clear up questions about his mental fitness.

On the campaign trail in 2020, Biden infamously rebuffed a question about a cognitive test by mentioning cocaine.

"No, I haven’t taken a test. Why the hell would I take a test? Come on, man,” Biden said. “That’s like saying to you, before you got on this program if you had taken a test were you taking cocaine or not. What do you think, huh? Are you a junkie?”