Democratic presidential candidate and Vermont Sen. Bernie SandersBernard (Bernie) SandersDems ponder gender politics of 2020 nominee 2020 Dem contenders travel to key primary states After Florida school shooting, vows for change but no clear path forward MORE said that he would do everything he can to prevent a President TrumpDonald John TrumpAccuser says Trump should be afraid of the truth Woman behind pro-Trump Facebook page denies being influenced by Russians Shulkin says he has White House approval to root out 'subversion' at VA MORE from banning Muslims from entering the country. 

“As a United States senator, I will do everything in my power to make sure that absurd, hateful proposal never occurs,” he said on MSNBC’s “The Rachel Maddow Show” Friday. 

Sanders laughed when Maddow pointed out that the newly elected mayor of London, Sadiq Khan, would not be allowed in the country under Trump’s temporary ban on Muslims entering the U.S. But he said on a serious note that “of course” Trump’s rise to becoming the GOP’s presumptive nominee has hurt the country. 

Sanders said Trump is alienating Hispanics and Muslims all over the world.

“He is managing to antagonize large sections of this planet against the United States. That is unacceptable, that is incredibly destructive, and that is why this guy will not become president,” Sanders said.

Sanders said that he would do everything he can to keep Trump from the Oval Office. 

"Donald Trump represents a whole lot that I passionately hate. And I will do– if I’m not the candidate, I will do everything I can to make sure that Donald Trump does not become president of the United States," he said. "I think he would be a disaster for this country in so many ways.”