This post originally appeared at Smoking Politics.
Steve Benen and Greg Sargent have written some pretty sharp and strong posts about Karl Rove's Crossroads group and the ads they have been running, one of which is so blatantly false that it's been taken off the air.
From Steve's article, here is the low-down on the 'claim' of that ad that ran against Jon Tester.
In it, Tester is accused of supporting an Environmental Protection Agency rule — a rule that was never in fact proposed — to regulate farm dust. But the vote that the ad cites actually had nothing to do with dust or the EPA; it was a procedural vote on a measure aimed at cracking down on China for manipulating currency.