This guy is full of crap.
As far as separation of c&s...
Everybody can vote how they want. If people feel they should vote a certain way based on religious belief, that is completely acceptable. In that sense, religion will never be completely separated from the government. But when guys like this use lies to try to convince people that the government actually should support a certain religion, that needs to be stopped. Period. The government should never tell people what to believe. The government should allow everybody the equal opportunity to practice their religion freely.
I had a high school government teacher tell me one time "If people want have prayer in school I'm completely fine with that. I only have one condition: I want to write the prayers. And I'm Hindu."