Sen. Bernie Sanders (I-VT) -- a strong Warren backer -- is cautiously optimistic.
"That is a very good question," Sanders said when TPM asked if he understood what Warren's new job really is. "And the answer is no. And that is not insignificant."
"The real question is: Will she be in a powerful position to protect consumers against Wall Street greed?" Sanders said. "And if she is, it will be probably the very best appointment that President Obama has made...but you're right, the devil remains in the details."
After calling Warren "the czar of all czars," Sen. Bob Corker (R-TN) acknowledged, in response to a question from TPM that he's not sure what her authority will be.
"Maybe we ought to see," Corker said. "It appears to me that exactly the things that many of us thought were going to happen have happened. We'll see. Maybe there are some details here that we're missing."
Aides on the Hill are equally perplexed -- unsure whether Warren will truly be running the show or simply advising the White House and the Treasury on the Bureau's functioning until a full-time director is confirmed.
Looks like we'll have to wait to see if Warren is given a great deal of discretion in her advisory role, and whether or not Obama officially nominates her to head the new Bureau.