Thomas Jefferson borrowed the phrase from a persecuted Baptist: 'a wall of separation between Church & State.' For 250 years Americans have fought over what it means — and whether it should stand at all. This 14-part ReThink History series traces the doctrine of church-state separation from its colonial roots through the Supreme Court cases that built it, the political realignment that turned faith into a voting bloc, and the funding fights now testing the wall in real time: Roger Williams and the garden of the church; Madison, Jefferson, and the First Amendment; the day prayer left the public classroom; the rise and fall of the Lemon test; Billy Graham, Nixon, and the great evangelical migration; Bob Jones, the IRS, and the grievance that organized the Religious Right; Falwell's Moral Majority and Robertson's 700 Club; Promise Keepers; the school-choice revolution that turned 'no aid to religion' into 'no exclusion of religion'; Alaska's homeschool allotments; how Liberty University was built into a machine for training a governing class; and the new claim, from a rising movement, that the separation was never real — 'a fabrication.' We test one question without shouting it: is the wall being lowered in ways that threaten a pluralist democracy, or is this an overdue correction to a metaphor read too broadly? We give the strongest version of both answers and let the record argue. A measured, sourced deep dive, narrated by AI voices from human-reviewed research. © 2026 Selway Solutions LLC · <a href="https://history.selwaysolutions.io/index.html#license">Educational & Institutional Use License</a> · <a href="mailto:nick@selwaysolutions.io">Contact</a>
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The newest move isn't to lower the wall but to deny it ever existed.
Jerry Falwell built a movement — and something more durable: a university.
The live test case for the whole national fight.
In twenty years the Supreme Court flipped the rule on public money and religion — from 'no aid' to 'no exclusion.' Zelman, Trinity Lutheran, Espinoza, Carson v.
Hundreds of thousands of men packed stadiums to weep, pray, and make promises.
How scattered churchgoers became a voting bloc.
Many historians argue the movement's real spark was the IRS moving against segregated Christian schools' tax exemptions.
Not a single flip but a slow migration: Cold War anti-communism, the Democrats' embrace of civil rights and the 1948 Dixiecrat revolt, and Nixon's Southern Strategy.
One three-part test decided nearly every church-state case for half a century — then the Court buried it.
In 1962 and 1963 the Supreme Court ended official prayer and devotional Bible reading in public schools — and lit a political fire that still burns.
For 150 years the First Amendment restrained only Congress.
State churches ended — and a Protestant culture took their place in the new public schools.
How a principle became policy: Patrick Henry's tax for 'teachers of the Christian religion,' Madison's Memorial and Remonstrance, Jefferson's Virginia Statute, Article VI's no-religious-test clause, the First Amendment, and the 1802 Danbury letter that gave us the 'wall of separation.' Includes the originalist counterargument..
Long before Jefferson, a banished Puritan named Roger Williams argued for a 'wall of separation' — to protect the church from a corrupting world, not to keep faith out of public life.