A top climate change advocacy group on Friday dismissed presumptive Republican presidential nominee Donald Trump’s selection of Rep. Kevin Cramer, R-N.D., to advise him on energy policy.

In a press release, NextGen Climate slammed Cramer, who they say represents Exxon Mobil thanks to large donations from the gas corporation, after it emerged that he would be advising Trump on energy. Cramer is a well-known advocate of fracking, having represented North Dakota, a major oil drilling state, since 2013.

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