"It must be embarrassing for you to do a tweet now with the power you once had," Matthews said. "...What evidence do you have that they got to the [Bureau of Labor Statistics]?"

"I have no evidence to prove that, I just raised the question," Welch said.

"No, you didn't raise the question," Matthews said. You were asserting ... did you talk to any economists?"

"I know that these numbers are gathered by a series of wild assumptions," Welch insisted.