South Carolina Rep. Trey Gowdy said Sunday that, after 18 months of congressional investigation into possible collusion between the Trump campaign and Russian government, he has yet to see a “scintilla” of evidence showing that there was coordination between the two sides.

The Republican also said it is unlikely that any Democrat has seen evidence of collusion because if they had, California Rep. Adam Schiff would have already leaked it.

“I have not seen one scintilla of evidence that this president colluded, conspired, confederated with Russia, and neither has anyone else, or you may rest assured Adam Schiff would have leaked it,” Gowdy said during an interview on “Fox News Sunday.”

“That’s why they’ve moved off of collusion onto obstruction of justice, which is now their current preoccupation,” he added.

Gowdy, who is a member of the House Intelligence Committee and chairman of the Committee on House Oversight & Government Reform, said he has likely seen more government documents related to the collusion investigation than anyone in Congress. (RELATED: Gowdy: ‘There Are Far Fewer Leaks From Bob Mueller Than There Are From Adam Schiff’)

In past interviews, Schiff, the top Democrat on the Intelligence Committee, has claimed that he has seen “more than circumstantial evidence” of collusion. But when pressed to identify the evidence, Schiff has stopped short of showing that President Donald Trump or members of his campaign conspired with Russian government officials to release Democrats’ hacked emails. (RELATED: Gowdy: Republicans ‘Don’t Give A Damn’ About What Adam Schiff Thinks)

In an appearance on ABC News’ George Stephanopoulos on Sunday, Schiff said Trump is “acting like someone who’s compromised.”

“It may very well be that he is compromised or it may very well be that he believes that he’s compromised, that the Russians have information on him,” he said.

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