From Politico:

A POLITICO review of tax filings, financial statements and other public documents found that Leo and his network of nonprofit groups are either directly or indirectly connected to a majority of amicus briefs filed on behalf of conservative parties in seven of the highest-profile rulings the court has issued over the past two years.

It is the first comprehensive review of amicus briefs that have streamed into the court since Trump nominated Justice Amy Coney Barrett in 2020, solidifying the court’s conservative majority. POLITICO’s review found multiple instances of language used in the amicus briefs appearing in the court’s opinions.

The Federalist Society, the 70,000-member organization that Leo co-chairs, does not take political positions. But the movement centered around the society often weighs in through many like-minded groups. In 15 percent of the 259 amicus briefs for the conservative side in the seven cases, Leo was either a board member, official or financial backer through his network of the group that filed the brief. Another 55 percent were from groups run by individuals who share board memberships with Leo, worked for entities funded by his network or were among a close-knit circle of legal experts that includes chapter heads who serve under Leo at the Federalist Society.