Considering where certain people and a certain political party in the
USA are trying to take religion, it is rational to believe that there is
an effort to turn this country into a Christian version of an
ayatollahville.
The interesting thing is that there is no specific language in the US
Constitution that provides for the separation of church and state. That
issue was left to the states to decide. But, the people's right to keep
and bear arms was ensured by its language.
Let's say Maryland was to return to its Catholic roots and it had a
constitutional amendment that says Catholicism was the Maryland State
religion. There would be nothing the Congress could do or that the
SCOTUS could do to stop that.
The first amendment says "Congress shall make no law..."