If the President alienates Muslim Americans, frequent President Donald Trump critic Khizr Khan said he may end up endangering national security. "Muslim are at the front lines. Patriotic Muslims within the United States feel alienated and if they are alienated, they will not be as supportive of his policies, as supportive of security and the threats that loom within our country," the Gold Star father told CNN's Alisyn Camerota Thursday on "New Day." "He should be reaching out to Muslims. He should be reaching out, joining hands to deal with the safety of the United States."