The Congress can write whatever laws they want. It will be up to SCOTUS to determine if the laws are constitutional. Like I said, it will be interesting to watch them contort the Constitution to justify Christian values over the values of other religions.

I think if we ever get to the point of one religion, other religions will no longer be recognized as "religions." Their values and beliefs will be overridden by Christianity.

Other religions will be regarded more like community groups. Spaces where likeminded people can meet but they will not be protected by law and most likely be shut down if the government deems them a threat.