Trump's remark to ban Muslims from coming to the United States is harmful to national security interest, White House Press Secretary Josh Earnest said.

Millions of Muslims are on the side of the US and our international coalition in trying to degrade and destroy the terrorist group, he said.

The Pentagon too criticised the comment, saying the remark was "contrary to our national security."

The Homeland Security Secretary said Trump's anti-Muslim rhetoric is harming US national security interest.

Trump called for a 'total and complete shutdown' of Muslims entering the US, in the wake of a mass shooting in California by a Muslim couple believed to have been radicalised.

The remark was the latest in a series of increasingly virulent remarks by Trump in recent weeks.

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