In one generation a colonial metaphor became national law. Virginia's fight over a church tax produced Madison's Memorial and Remonstrance and Jefferson's Statute for Religious Freedom, the Constitution banned religious tests, and the First Amendment forbade an establishment. In 1802 Jefferson gave the doctrine its enduring name in a letter to Connecticut Baptists.
Scholars divide over whether the framers forbade only a single national church or all government support of religion. Critics argue the wall of separation phrase is a later gloss given outsized weight, and Madison's late private memoranda are contested as evidence.



