White House refuses to answer any questions about BATF gun runner scandal

With all the focus on guns going to Mexico, how can it be credible that the Obama administration says that it knows anything about the BATF scandal? From CBS News:

White House press secretary Jay Carney did not shed any light Monday on the allegations uncovered by CBS News that ATF intentionally let thousands of assault rifles and other weapons fall into the hands of Mexico's drug cartels. Insiders call the controversial practice letting guns "walk."

In the wake of our CBS News investigation, Mexico has asked the U.S. for more information. Two AK-47 type variant assault rifles that ATF allegedly let "walk" were found at the murder scene of Border Patrol Agent Brian Terry last December. Here's the excerpt from today's White House briefing:

CBS News chief White House correspondent Chip Reid: "Do you have any comment on the story and on these developments today?"

Carney: "I don't. Obviously, as the president pointed out when he spoke here with President Calderon, we take the issue of the flow of guns south very seriously, as we do the issue of the flow of drugs north. And -- but beyond that, I don't have any comment."

Reid: "Is he aware of this specific allegation..."

Carney: "I don't know."

Reid: "... that hundreds of guns went into Mexico with the knowledge of ATF?"

Carney: "I don't know." . . .