Donald Trump has called for temporarily banning all Muslims from entering the United States. | AP Photo Charles Koch calls Trump's Muslim registry plan 'reminiscent of Nazi Germany'

Conservative billionaire Charles Koch chastised Donald Trump for his plan to register all Muslims, calling the idea “monstrous.”

“That's reminiscent of Nazi Germany. I mean, that's monstrous, as I said at the time,” Koch said in an interview with ABC News’ Jonathan Karl.


Koch also said Trump’s proposal to temporarily ban all Muslims from entering the United States is “antithetical to our approach.”

Trump has previously said, if elected president, he’d support creating a database of all Muslims in America. He later backed off the comment, saying a reporter had suggested the database.

Koch also said during the interview that “it’s possible” that another Clinton would be better than a Republican president.