Former FBI Director James Comey weighed in on speculation that Trump-appointed acting Attorney General Matt Whitaker may take steps to derail special counsel Robert Mueller’s probe by criticizing Whitaker’s intelligence, but also offering that Whitaker “knows” he can’t shut down the investigation.

“I think it’s a worry, but to my mind, not a serious worry,” Comey told a Boston NPR affiliate, WGBH. “The institution is too strong and he frankly is not strong enough to have that kind of impact. He may not be the sharpest knife in our drawer, but he can see his future and knows that if he acted in an extra legal way, he would go down in history for the wrong reasons and I’m sure he doesn’t want that.”

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