Fox News senior judicial analyst Andrew Napolitano isn’t backing down from his damning assessment of special counsel Robert Mueller’s report despite attacks from President Donald Trump.

Last week, Napolitano said the report exposed a pattern of obstruction by the president that was “unlawful, defenseless and condemnable.”

Trump responded on Twitter by calling Napolitano “dumb” and claiming he had asked for a Supreme Court nomination for himself and a pardon for a friend.

But Napolitano didn’t back down. On Monday evening, he told Martha MacCallum on Fox News that Mueller’s report detailed how Trump had asked White House counsel Don McGahn to lie to investigators. He called that “classic obstruction” even though McGahn ultimately didn’t do so.

The law, Napolitano said, prohibits “attempted interference” as well as actual interference.

Earlier in the day, Napolitano told Fox Business host Maria Bartiromo that the pardon incident Trump tweeted about was for a mutual friend, and was brought up by Trump. He also denied seeking a Supreme Court seat, saying that while he was pitching Neil Gorsuch ― who was eventually picked ― Trump also asked him to pitch himself.