[TigerClaws]

Exactly.

Once you say is ‘marriage is whatever the heck you want’ then why not incest, polygamy, or any other arrangement two more more consenting adults want?

[Kickass Conservative]

When the Dam bursts, everyone drowns.

[Kickass Conservative]

Liberals love to joke that in some of those backward “Red” States, you can Marry your First Cousin because there are no Laws against it.

Well, I guess they want the same for all those Progressive thinking “Blue” States too.

[Cboldt]

Judges make arbirtary decisions, couched in obfuscation. If the judges decide two people, no incest, then that's what the law will be. It's trivially easy to come up with some sort of "why not" reason against incest and polygamy.

Congress lacks the fortitude to act against the judges (impeach them), and not many people are willing to disobey courts, usually becaure courts back up their orders with force of violence.