States don't have rights. States are granted powers.
Marriage is a religious issue. The government needs to keep out of it.
If somebody wishes to get "married" outside of church, they should go hire a lawyer and work up a contract.
“Marriage is a religious issue. The government needs to keep out of it.”
Not really. It is the basic building block of society. Also, people get divorced, and it involves property rights, child custody, sometimes criminal fraud, etc.