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On "Hannity" tonight, Republican presidential candidate Marco Rubio said that Donald Trump's proposed ban on Muslims entering the U.S. is not constitutional and would not withstand additional scrutiny.

"To have a religious test would violate the Constitution," Rubio stated, explaining that the real question we should be asking is: Can we properly vet people coming into this country?

"If you cannot vet someone - whether they're Muslim or not - they shouldn't be allowed into the United States, irrespective of what their faith background might be," Rubio said. "You have to be able to properly vet everyone."

He said that in addition to refugees coming to the country, we're also facing the new problem of people being radicalized inside the U.S.

"We have a homegrown violent extremist problem as well," Rubio said. "This is a very unique situation that we're now facing that's really begun to accelerate over the last few years."

Watch the "Hannity" interview above.

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