Yesterday evening, it was announced that Attorney General Eric Holder appointed two prosecutors to investigate alleged national security leaks to the media from the White House. But now two leading Senate Republicans are urging President Obama to appoint independent “outside special counsel” to investigate leaks, instead.

“It is imperative that an independent investigation be conducted where the results could be accepted with a high degree of confidence and without a hint of political considerations,” Senators John McCain and Lindsey Graham say in a joint statement. “We are confident the two U.S. Attorneys hand-picked by Attorney General Holder are fine men. However, if there was ever a situation where we needed an outside special counsel that would enjoy bipartisan acceptance and widespread public trust, it is now.”