the practice of monitoring content altogether so as to avoid "knowledge" of illegal content. Americans with Disabilities Act (ADA) In 2016, complainants from Gallaudet University brought a lawsuit against UC Berkeley for not adding closed captioning to the recorded lectures it made free to the public. In what many commentators called an unintended consequence of the Americans with Disabilities Act of 1990, the Department of Justice ruling resulted in Berkeley deleting 20,000 of the freely licensed videos instead of making them more accessible, which Berkeley had described as being cost prohibitive. Allow States and Victims to Fight Online Sex Trafficking Act - Stop Enabling Sex Traffickers Act (FOSTA-SESTA) Allow States and Victims to Fight Online Sex Trafficking Act (FOSTA) is a bill introduced in the U.S. House of Representative by Ann Wagner in April 2017. Stop Enabling Sex Traffickers Act (SESTA) is a similar U.S. Senate bill introduced by Rob Portman in August 2017. The combined FOSTA-SESTA package passed the House on February 27, 2018 with a vote of 388-25 and the Senate on March 21, 2018 with a vote of 97–2. The bill was signed into law by Donald Trump on April 11, 2018. The bill amended Section 230 of the Communications Decency Act to exclude the enforcement of federal and state sex trafficking laws from immunity, and clarified the Stop Advertising Victims of Exploitation Act to define participation in a venture as knowingly assisting, facilitating, or supporting sex trafficking. The bills were criticized by pro-free speech and pro-Internet groups as a "disguised internet censorship bill" that weakens the section 230 safe harbors, places unnecessary burdens on internet companies and intermediaries that handle user-generated content or communications with service providers required to proactively take action against sex trafficking activities, and requiring a "team of lawyers" to evaluate all possible scenarios under state and federal law (which may be financially unfeasible for smaller companies). Online sex workers argued that the bill would harm their safety, as the platforms they utilize for offering and discussing sexual services (as an alternative to street prostitution) had begun to reduce their services or shut down entirely due to the threat of liability under the bill. Proposed federal legislation that has not become law Deleting Online Predators Act (DOPA) The Deleting Online Predators Act of 2006 was introduced, but did not become law. Two similar bills were introduced in 2007, but neither became law. The