The Humane Society of the United States and Humane Society Legislative Fund commend the U.S. House of Representatives for passing H.R. 2576, the Frank R. Lautenberg Chemical Safety for the 21st Century Act, which strengthens federal oversight over the use of tens of thousands of chemicals in commercial use and contains provisions to minimize and in some cases replace animal testing to evaluate chemical safety. Following months of negotiations, Congress came to final terms on reform of the Toxic Substances Control Act (TSCA) to modernize the scientific approach to chemical testing. The TSCA reform bill calls for quickly identifying chemicals that are most likely to pose health problems, and focusing resources on testing them more thoroughly. It also prioritizes the research and development of new testing methods and requires the use of existing validated alternatives to animal testing where available.