Sen. Bernie Sanders, I-Vt., said Friday that President Trump is a liar who is making it impossible for Congress to find an agreement on spending, immigration, and other issues.

"We have a president who has driven the respect that this great country has all over the world down, and down lower than it has ever been," Sanders said on MSNBC Friday.

"You have a president, this is not just me saying it, who is a pathological liar," he said.

Sanders said Trump promised to stand up to companies when he was running for office, but "he lied."

He also said Senate Majority Leader Mitch McConnell, R-Ky., said on Thursday that it's not always easy to know where Trump stands on various issues.

"Unfortunately, I think he is a liar, I think he has, you know, what can I say?" Sanders said.