Sen. John McCain offers these comments at Newsweek on the 527 issue. Never one to mince words, the Senator writes:

Why are these groups allowed to break the law? Because of the Federal Election Commission’s despicable failure to do its job. Led by a Democratic apparatchik on one side and a right-wing ideologue on the other, the commission is politically hidebound, and has refused to take on those who brazenly thumb their noses at the law. It’s hard to argue that McCain-Feingold is responsible for that.

In related news, see this article on proposed 527 legislation in Congress.