Report tries to identify Congress’ climate science skeptics

By Amelia Davidson | 12/19/2025 06:50 AM EST

A study from left-leaning think tank Center for American Progress says there are more than 100.

Sen. Mike Lee at an oversight hearing.

A think tank allied with Democrats is labeling Senate Energy and Natural Resources Chair Mike Lee (R-Utah) a climate science denier. Allison Robbert/AP

A new report from progressive think tank Center for American Progress claims there are 119 members of Congress who deny the existence of human-caused climate change.

CAP’s report, released Thursday, says there are 95 House members and 24 senators who deny climate change. All are Republicans.

“Climate deniers who willfully ignore the overwhelming evidence of human-caused climate change continue to pervade the halls of Congress, and now, all levels of the federal government,” said Kat So, the report’s author.

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CAP compiled their list of climate deniers by parsing through lawmakers’ past statements to the press, on social media or while legislating.

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