In a Fox News interview on Sunday, Republican presidential candidate Newt Gingrich claimed that he “never favored cap and trade,” four years after he expressed “strong support” for a cap-and-trade program to reduce carbon pollution. Gingrich told questioner Ken Cuccinelli, the Virginia attorney general, that the climate action ad he did with House Speaker Nancy Pelosi as part of Al Gore’s We Campaign was the “dumbest thing” he’d ever done:

I said publicly sitting on the couch with Pelosi is the dumbest thing I have done. But I never favored cap and trade and actively testified against it. I was in the U.S. House and Energy Committee the same day Al Gore was there to testify for it and I testified against it. Through American Solutions we fought it in the Senate and we played a major role in defeating it.

Watch it:

In 2007, Gingrich told Frontline he would “strongly support” a mandatory cap and trade program:

I think if you have mandatory carbon caps combined with a trading system, much like we did with sulfur, and if you have a tax-incentive program for investing in the solutions, that there’s a package there that’s very, very good. And frankly, it’s something I would strongly support.

Gingrich may never have “favored” cap-and-trade. Instead, he strongly supported it.

Gingrich’s positions on global warming and federal climate policy have twisted in the wind over more than two decades, with his positions mostly coinciding with whether the party holding the presidency is a Republican or a Democrat. Here’s ThinkProgress Green’s exclusive history of the epic series of reversals Gingrich has made since 1989, while carbon pollution and the earth’s temperature have skyrocketed: