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On his program tonight, Tucker Carlson said former National Security Adviser Michael Flynn pleading guilty to making false statements to the FBI is a major development, but it doesn't prove collusion between the Trump campaign and Russia.

Flynn admitted that he lied about his conversations with Russian Ambassador Sergey Kislyak during the presidential transition.

As part of the plea deal, Flynn agreed to cooperate with Special Counsel Robert Mueller's investigation, which is looking into alleged Russian interference in the 2016 U.S. presidential election.

"Mueller's probe began in order to investigate claims that Russia influenced the 2016 election or even directly colluded with the Trump campaign in order to alter the outcome of that election," Carlson said. "Flynn's guilty plea today does not prove that claim. In fact, it undercuts it."

He explained that Flynn admitted he lied to the FBI about initiating contact with Kislyak in December 2016.

"That's a month after the November election. Too late to sink the Hillary campaign. There goes that theory," Carlson said, pointing out that Flynn apparently was trying to promote U.S. interests, according to the plea document.

He said it may have been ill-advised for Flynn to contact a foreign representative before formally taking power, but Mueller's investigation, like many probes involving a special counsel, is not staying limited to its original purpose.

"They frequently wind up entrapping people whose only crime is the false testimony they provide during the investigation," Carlson said.

He said if investigators can prove that the Trump campaign worked with Russian President Vladimir Putin to steal the 2016 election, then he will be the first to call for a criminal prosecution.

"But this? So far it's hard to know exactly how this makes America better."

Watch more above.

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