Sen. Mike Lee (R-UT) told MSNBC’s Chris Matthews Monday that he is giving Congress ten days to pass a constitutional amendment that would make raising taxes nearly impossible. And if he doesn’t get what he wants, he will do everything in his power to force the U.S. to default on its debts.

“Okay, in ten days you want to change the United States Constitution by two-thirds vote in both houses?” Matthews asked. “That’s what you’re demanding.”

“Yes,” Lee admitted. “If possible we can’t change the Constitution just in Congress but we can submit it to the states. Let the states fight it out.”

“You want the Democratic Senate, by a two-thirds vote, to pass a constitutional amendment or you want the house to come down?” Matthews pressed.