I think Barack Obama is probably a secular humanist at heart, but I don't think he engaged in any kind of organized "war on religion." Trump, for all his disgusting sucking up to the religious right, is basically a secular humanist too. The difference is that Obama's faith is in government and Trump's is in capitalism.

The U.S. is moving into a secular era in government and, on the whole, I think that's probably a good thing. When religion has an undue influence on government it becomes oppressive. It also becomes corrupted. The separation of church and state is really for the benefit of both institutions.