To nyu stud: From your screen name I am guessing that you are under 25. You need to learn where the phrase “America First” comes from. In part, it comes from the 1930’s, when fear of war in Europe led many Americans to put “America First” and stay out of the impending European wars. German-Americans were big supporters of America First, because they had no interest in seeing the US oppose their ancestors’ homeland’s master racist.
I have no idea whether our president is aware of the connection of this phrase to ugly parts of America’s past – he is not a student of history unless it includes himself. But the phrase invokes some of the ugliest – and most anti-Semitic – portions of American history, and I fear that the president may be aware of that much.