First, let me say that I am adamantly opposed to the amending of the 1st amendment. I think our current way of doing it is far superior. And I would fight against the US adopting ANY official religion.
But the topic has been discussed in other threads, so I wanted to ask this question.
That is the purpose of the 1st Amendment of the US Constitution....to forbid the federal congress from Establishing one religion in favor of another religion. The "Establishment Clause" established "Freedom of Religion" not freedom from religion.
Thomas Jefferson expressed the same logic and reason in addressing a letter from a Bapist Minister in Danbury. The preacher was concerned that the US federal government was going to adopt one religion in favor and in exclusion to all other religions. Jefferson did not address state sponsered churches but he assured the Bapist Minister that the Federal Government was forbidden by the 1st amendment "Establishment Clause" from endorsing on religion over another.
Some attempt to twist Jefferson's response as claiming there is a "Wall of Separation" between church and state.......which is absurd, with the US Government establishing the Chaplin Corp to serve its military members in July 1775......which has never been disbanded from that date forward to current......add the fact that every state constitution makes a reference to God. Jefferson was simply reasurring the people of Danbury that the federal government was expressly forbidden from Establishing Religion which results with THE PEOPLE/STATES having a guaranteed "freedom of religion". Jefferson never concluded that any state was forbidden from practicing what ever faith its people wanted to practice. Jefferson referenced only the Establishment Clause that is expressly forbids CONGRESS (the US Congress) from establishing religion.
The reason the 1st amendment exists is due to the fact European Governments were controlled by ONE RELGION from Rome.......this was the direct cause of the Protestant Movement that was the beginning of the establishment of the United States of America as THE PEOPLE made an exodus from the Government mandated religion found in Europe seeking religious freedom on the North American continent. All the early settlements came about from those seeking religious freedom.
That is the reason that the Freedom of Religion, Freedom to Assemble, and Freedom of the Press and Speech are all found in the State's Bill of Rights, also known as the 1st 10 amendments to the US Constitution. Not one of the States wanted a carbon copy that had existed in Europe where the state mandated what religion was acceptable and what religion was not acceptable.
Now you have supposed LIBERALS attempting to grant to the Fed's power and authority that the States Bill of Rights forbid the Feds from having......dictating to people that they are not free to exercise their religious faith in places paid for by TAX PAYER DOLLARS.