From the Post.

From the Times.

White House officials acknowledged Friday that they had no specific evidence to indicate that the chamber had used money from foreign entities to finance political attack ads.

“The president was not suggesting any illegality,” Bob Bauer, the White House counsel, said. Instead, he said Mr. Obama’s reference to the chamber was meant to draw attention to the inadequacies of campaign disclosure laws in allowing groups to spend large amounts of money on politics without disclosing their donors.

From Factcheck.org.