Bill Maher is no stranger to making fun of Republicans for their penchant to deny climate change. On Friday night he took that mockery a step further by releasing a mock attack ad, noting that the Iowa caucuses fell on the same day as Punxsutawney Phil predicted an early spring. “Naturally, the conservatives now think that Punxsutawney Phil is in the tank with the liberals on global warming,” Maher said. “They’re crazy about this issue.”

The ad describes Punxsutawney Phil as “just another scientist” who is “another climate alarmist.” He “doesn’t just hug trees, he lives under one,” notes the ad.