In the wake of an explosive new allegation that the CIA spied on Senate intelligence committee staffers, one senator felt this morning that he needed to make something clear.

“The Senate Intelligence Committee oversees the CIA, not the other way around,” Sen. Martin Heinrich (D-N.M) said in a press release.

In normal circumstances, that would have been a statement of the obvious. Today, it was more a cry for help.

McClatchy News Service on Tuesday reported that the CIA’s inspector general has asked for a criminal investigation into CIA monitoring of computers used by Senate aides who were investigating the agency’s prominent role in the Bush-era torture of detainees.

Specifically, McClatchy reported: “The committee determined earlier this year that the CIA monitored computers – in possible violation of an agreement against doing so – that the agency had provided to intelligence committee staff in a secure room at CIA headquarters that the agency insisted they use to review millions of pages of top-secret reports, cables and other documents, according to people with knowledge.”

In a letter to President Obama on Tuesday, Sen. Mark Udall (D-Colo.) referred to what he called “unprecedented action against the Committee in relation to the internal CIA review,” and described it as “incredibly troubling for the Committee’s oversight responsibilities and for our democracy.”

The allegation comes on the heels of a fruitless quest by members of the House and Senate to get NSA officials to confirm or deny whether information on phone calls by members of Congress has been swept up in the agency’s metadata dragnet. (Since it’s so indiscriminate, presumably they have, but the NSA won’t say so.)

Rest of story here