ProPublica released a new report on Friday detailing Justice Clarence Thomas’ close relationship with the Koch brothers with previously undisclosed and extraordinarily damning new details.

According to ProPublica, the justice developed a friendship with the Kochs as they were funneling hundreds of millions of dollars into right-wing causes, many of which ended up before the Supreme Court. The brothers then used Thomas to raise money for their sprawling network, inviting him to speak at “donor events” that brought in millions of dollars.

He disclosed none of these activities on his annual disclosure forms, an obvious violation of federal ethics law.