Mondays's testimony by former acting Attorney General Sally Yates in front of a Senate subcommittee, did not impress the Commander-in-Chief.

FOX's Jon Decker has more from Washington D.C.:

The former acting Attorney General testified that she informed the White House counsel that the Department of Justice believed that then-national security adviser Michael Flynn could be subject to blackmail by the Russian government.

This after Flynn lied to Vice President Pence about the nature of his conversations with Russia's Ambassador to the U.S.:

(Yates) "The Vice President and others were entitled to know that the information that they were conveying to the American people wasn't true."

Yates' testimony did not impress President Trump who tweeted, "The Russia-Trump collusion story is a total hoax."

At the White House, Jon Decker, FOX News.