In May 2016, Wyden introduced the Presidential Tax Transparency Act, legislation requiring sitting presidents and presidential nominees to release their tax returns publicly. Wyden reintroduced the legislation in January 2019, saying in a statement, "Trump blew off a 40-year, bipartisan, pro-transparency tradition by refusing to release his tax returns — a tradition that dates all the way back to Watergate. It’s not just a matter of the president destroying a good-government campaign tradition." He called the legislation "the one-two punch needed to keep the Trump administration from stonewalling congressional oversight efforts, and ensure public transparency if Trump’s tax returns get tied up in court."