Sure, if people AGREE that homosexuality falls under this; but many people believe it is a behavior that is unnatural and they don't believe in it.But Public Accommodation laws that forbid discrimination based upon any of those criteria treat all of those exactly the same.
Since this hasn't been proved to them otherwise, it is faith based.
Both views are faith based, so the govt cannot endorse one faith based belief over another.
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If by 'behavior' you mean sex- that issue has been legally resolved- whether people believe it or not, it is legal for homosexuals to have sex.
Marriage laws have nothing to do with faith. We have the right to get married and religion has nothing to do with that. The Constitution guarantees equal protection before the law- and to me it is quite clear that 'equal protection' means treating a gay couple equally with my wife and I.
And that is what the courts have overwhelmingly been saying also.