Lieu: There will be 'widespread civil unrest' if Trump fires Mueller

Rep. Ted Lieu (D-Calif.) issued a stark warning to President TrumpDonald John TrumpTrump says he doesn't want NYT in the White House Veterans group backs lawsuits to halt Trump's use of military funding for border wall Schiff punches back after GOP censure resolution fails MORE on Monday evening, saying there would be "widespread civic unrest" if he moved to fire special counsel Robert MuellerRobert (Bob) Swan MuellerFox News legal analyst says Trump call with Ukraine leader could be 'more serious' than what Mueller 'dragged up' Lewandowski says Mueller report was 'very clear' in proving 'there was no obstruction,' despite having 'never' read it Fox's Cavuto roasts Trump over criticism of network MORE

"If the president does go ahead and fire Robert Mueller, we would have people take to the streets. I believe there would be widespread civil unrest because Americans believe the rule of law is paramount," Lieu told MSNBC's Chris Hayes.  

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"I think you're going to have protests, and marches, and rallies, and sit-ins. I believe Americans would not stand for the firing of Robert Mueller," he said. 

"The president hasn't been able to point to a single thing that Robert Mueller has done wrong. There is no basis to fire him. And he would have to fire Deputy Attorney General Rod RosensteinRod RosensteinTrump attacks Sessions: A 'total disaster' and 'an embarrassment to the great state of Alabama' Mueller rejoins DC law firm Lewandowski says Mueller report was 'very clear' in proving 'there was no obstruction,' despite having 'never' read it MORE first in order to fire Robert Mueller."

The president has ramped up his attacks on Mueller's probe into Russia's election interference, mentioning him for the first time by name in a tweet over the weekend.  

Trump has denied any collusion between his campaign and the Kremlin, and has referred to the probes investigating the matter as a politically motivated "witch hunt."

The Washington Post reported on Monday that Trump's lawyers were aiming to limit the scope of a potential interview with Mueller amid fears the president would be left in a vulnerable position.