And then Barak sent him a letter, and that led to Senator McCain sending a very, very tough letter.

NPR: McCain, Obama Scuffle over Lobbyist Reforms

Holder goes into details about how the Justice Department is working on meeting the mass budget cuts in a letter to Senator Barbara Mulkuski (Chairwoman of Committee on Appropriations).

FORBES: Sequester Impact On Federal Prisons

Senator Bond wrote a letter to the President today about a conversation that we had here in the briefing room yesterday and Bill gave a couple of answers -- many answers, really -- on there was no political nature to the White House explanation of the dealing with Abdulmutallab.

WHITEHOUSE: Press Briefing