President Obama has long lamented the Supreme Court’s 2010 Citizens United decision for allowing a torrent of unregulated money to flood the political process (specifically, he’s called the ruling a “threat to democracy”). On his way out of office, Obama will land a counterblow. The president will issue an executive order requiring federal contractors to disclose their contributions to dark-money groups. Congressional Republicans and the business lobby have blocked legislative attempts to push the issue. As one of his final acts, the president will accomplish it with a stroke of his pen.

This article is part of the 2016 Fortune Crystal Ball, a package of 33 predictions about business, politics and the economy by the writers and editors of Fortune. To see the entire package, click here.