You dont think:
Nothing prevents legislators from voting for religious-based policy
conflicts with
The First Amendment (Amendment I) to the United States Constitution prohibits the making of any law respecting an establishment of religion
and
Thomas Jefferson wrote with respect to the First Amendment and its restriction on the legislative branch of the federal government in an 1802 letter to the Danbury Baptists (a religious minority concerned about the dominant position of the Congregationalist church in Connecticut):
Believing with you that religion is a matter which lies solely between Man & his God, that he owes account to none other for his faith or his worship, that the legitimate powers of government reach actions only, & not opinions, I contemplate with sovereign reverence that act of the whole American people which declared that their legislature should "make no law respecting an establishment of religion, or prohibiting the free exercise thereof," thus building a wall of separation between Church & State. Adhering to this expression of the supreme will of the nation in behalf of the rights of conscience, I shall see with sincere satisfaction the progress of those sentiments which tend to restore to man all his natural rights, convinced he has no natural right in opposition to his social duties.[9]