On July 16, presidential candidate Hillary Clinton announced she will “propose a constitutional amendment to overturn Citizens United” in her first 30 days in office if elected president.

The announcement, in a video created by Clinton, was played at Netroots Nation, a politically progressive conference held this past weekend in St. Louis, Missouri. In the video, Clinton says she will “appoint Supreme Court justices who understand that this decision was a disaster.”

Clinton has previously championed the establishment of a small-donor matching system for presidential and congressional elections.