This is a subtle fear mongering. Churches that buy into a contract with the feds have to honor the contract. Churches that don't, don't.
The most important issue within this case is the possibility the court will rule that a word previously defined within the legal system can be changed at the whim of either the court or the agitated masses.
The Constitutionally minded better catch on to this idea pretty quick, because if you can REDEFINE marriage within law, you can REDEFINE ANYTHING within law...
Listen closely, this isn't about men lying with men or women and women or whatever. It's about taking
From Blacks Law, 4th ed:
MARRIAGE. Marriage, as distinguished from the agreement to marry and from the act of becoming married, is the civil status, condition, or relation of one man and one woman united in law for life, for the discharge to each other and the community of the duties legally incumbent on those whose association is founded on the distinction of sex. 1 Bish.Mar. & Div. § 3; Collins v. Hoag & Rollins, 121 Neb. 716, 238 N.W. 351, 355; Allen v. Allen, 73 Conn. 54, 46 A. 242, 49 L.R.A. 142.A contract, according to the form prescribed by law, by which a man and woman, capable of entering into such contract, mutually engage with each other to live their whole lives together in the state of union which ought to exist between a husband and wife. Shelf. Mar. & Div. 1; Seuss v. Schukat, 358 III. 27, 192 N.E. 668, 671, 95 A.L.R. 1461.
And making it mean something totally new.
As I've mentioned before, people shouldn't have an issue if it's to be something like Garriage or Homoarriage that defines the same sex or other statistically insignificant out of the ordinary human relations and how they interact with society, but if they are going to insist on altering a legal definition that has lasted literally several millennia they need to be fought to the point of blows, because once they demonstrate they can change that words meaning, they can go after ANYTHING.
In which case, ALL that money and federal FORCE of law will cause many churches to fail and believers to run to the catacombs. Not supporting gay whatever will be criminalized.
Millenia of civilization worldwide reduced to his dicta.