Conversation so far:
What was the Americans for Tax Reform by Grover Norquist about?
The primary policy goal of Americans for Tax Reform is to reduce government revenues as a percentage of the GDP
Who came up with the idea of the Tax Reform by Grover Norquist?
Grover Norquist is best known for founding Americans for Tax Reform (ATR) in 1985, which he says was done at the request of then-President Ronald Reagan.

Question: What was it that he did for the tax reform?
Self-contained rewrite: What was it that Grover Norquist did for the Americans for Tax Reform?