[Bruce Campbells Chin]

Not sure how you figure that. I read it, and 28 U.S.C Section 1738C (a) only permits a private right of action against individuals acting under color of state law, i.e., the government. I don't even see how it would be possible to violate it unless you are the government.

What specific provision do you think would enable lawsuits against those you mentioned?

[NeverCheney]

Look up the Supreme Court decision that allowed IRS to strip Oral Robert’s U of its tax exempt status because it prohibited interracial dating. The decision relied on the fact Congress had passed national laws against racial discrimination.

So now, with a congressional law affirming same sex marriage, the ground is set for lawsuits against the tax exemptions for churches, schools , adoption orgs, etc if they don’t also affirm same Sec marriage.