Clarence Thomas Secretly Participated in Koch Network Donor Events

On Jan. 25, 2018, dozens of private jets descended on Palm Springs International Airport. Some of the richest people in the country were arriving for the annual winter donor summit of the Koch network, the political organization founded by libertarian billionaires Charles and David Koch. A long weekend of strategizing, relaxation in the California sun and high-dollar fundraising lay ahead.

Just after 6 p.m., a Gulfstream G200 jet touched down on the tarmac. One of the Koch network’s most powerful allies was on board: Supreme Court Justice Clarence Thomas.

During...