U.S. Treasury Secretary Jacob J. Lew said he has no more means to avoid hitting the debt limit after he used final extraordinary measures earlier this week.

“There is the dangerous notion that there’s always something else in the drawer,” Lew told Fox Business Network in an interview Thursday, according to a transcript supplied by the network. “Congress needs to understand that on Tuesday, I took the last steps I can take to create borrowing capacity. I don’t have any more, what used to be called extraordinary measures.”

Lew declined to speculate on what the ratings companies would do if the U.S. hits the debt ceiling.