The GOP is amping up its campaign against those seeking to hold Big Oil accountable for climate deception, with House Science, Space, and Technology Committee chairman Lamar Smith (R-Tex.) announcing Wednesday that his panel has issued subpoenas to the New York and Massachusetts attorneys general and climate groups demanding information on their ExxonKnew investigations.

According to the Washington Post:

In turn, the executive director of 350.org—one of the eight groups targeted—issued a blistering response.

“This subpoena is an obvious attempt by Exxon’s Congressional allies to intimidate critics of the company,” said 350’s May Boeve, declaring that it would have just the opposite effect.

“We know what’s really driving this investigation,” Boeve said, pointing to $70,000 in campaign contributions from ExxonMobil to members of the committee “and hundreds of thousands more from other fossil fuel companies in the last decade alone.”

“Still,” she said, “the fact that they’re so blatantly acting on behalf of these corporations instead of the American people is rather astounding.”