Sen. Markwayne Mullin of Oklahoma appeared on CNN Thursday to do the dirty work of defending the Trump administration’s anti-vaccine agenda—specifically, its push to relitigate the long-debunked claim linking vaccines to autism. Mullin’s appearance came just hours after Health and Human Services Secretary Robert F. Kennedy Jr. embarrassed the administration during a Senate committee hearing.

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“I'm saying why wouldn't we look at it? What's changed?” Mullin said in defense of Kennedy’s bogus investigation into the causes of autism.

“But why are you looking at vaccines?” host Kasie Hunt asked.

“I'm not,” Mullin insisted. “I'm saying why wouldn't we look at it? What's changed? What we do is–”

“--We have looke

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