In a White House press briefing earlier today, Dana "What is the Cuban missile crisis?" Perino was asked about Scott McClellan and the possibility of him testifying to congress.
John Conyers recently announced that he would begin discussions with Scott McClellan about testifying before Congress. Congressman Wexler has called on him to testify as well. Dana's response is that they have not received a formal request yet so she cannot comment.
But when asked the follow up question of whether the White House could potentially block McClellan from testifying she answered that they could. Hmmm... I wonder if they will stonewall him? We'll see.