Late-night host Jimmy Kimmel on Monday lampooned President TrumpDonald John TrumpDemocrats slide in battle for Senate Trump believes Kushner relationship with Saudi crown prince a liability: report Christine Blasey Ford to be honored by Palo Alto City Council MORE's refusal to say that he believes the Kremlin interfered in the 2016 election during a press conference with Russian President Vladimir Putin.

“Well, I guess that settles it. There you go. If you’re wondering whether or not Vladimir Putin has an incriminating video of Donald Trump, we now know beyond a treasonable doubt he does," Kimmel joked on his show.

"This wasn’t a good day for Donald Trump," he continued. "We haven’t seen an American so owned by a Russian since ‘Rocky IV.’”

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“Putin’s just having fun with this now. He actually offered to have his intelligence agents investigate the hacking of our election," Kimmel added, referencing the Russian president's suggestion that Moscow and Washington could form a cybersecurity working group.

"That’s like Papa John offering to investigate who’s been saying all the racist stuff at the company,” Kimmel said.

Trump's performance at Monday's press conference was widely condemned by Democrats, Republicans, media personalities and even some of the president's staunchest supporters.

Trump declared before his meeting with Putin that U.S. "foolishness" and special counsel Robert MuellerRobert Swan MuellerSasse: US should applaud choice of Mueller to lead Russia probe MORE's probe were to blame for souring relations between the two countries.

During the press conference, he said his intelligence officials have told him Russia interfered, but noted that Putin offered a "very strong" denial.

He concluded that he has confidence in "both parties," but added that he didn't "see any reason why it would be" Russia.

The president went on to deny that he colluded with Russia in the election, recounted his victory over Hillary ClintonHillary Diane Rodham ClintonRepublicans bail on Coffman to invest in Miami seat Katy Perry praises Taylor Swift for diving into politics Election Countdown: Small-donor donations explode | Russian woman charged with midterm interference | Takeaways from North Dakota Senate debate | O'Rourke gives 'definitive no' to 2020 run | Dems hope Latino voters turn Arizona blue MORE and called Mueller's investigation "ridiculous."