Congress members introduced a bill yesterday to fast-track trade agreements, including the Trans-Pacific Partnership (TPP) through Congress. If passed, lawmakers would only have a small window of time to conduct hearings over binding trade provisions and give an up-or-down vote on ratification without any ability to amend the terms before they bind the U.S. government. This legal arrangement is at odds with the spirit of the Constitution, which gives Congress authority over U.S. trade policy. Fast-track authority (also known as Trade Promotion Authority or TPA) means that Congress hands that power over to the White House and the U.S. Trade Representative. Stopping fast-track is one crucial step towards blocking secretive and undemocratic agreements like TPP and the EU-US trade agreement, the Transatlantic Trade and Investment Partnership (TTIP).