The groups in the network spent nearly $504 million on policy and political fights, including grants to about 150 allied groups, between mid-2015 and last year.
After leading efforts to put conservatives on the bench, the activist has quietly built a sprawling network and raised huge sums of money to challenge liberal values.
Court challenges to sweeping rollbacks of abortion rights must go through state supreme courts, many of which have been shaped by years of conservative activism.
A Supreme Court environmental case being decided this month is the product of a coordinated, multiyear strategy by Republican attorneys general and conservative allies.