MACH Act has not moved since its introduction on Jan 16, 2025, with cosponsors split almost evenly between the parties

Making Advancements in Commercial Hypersonics Act or the MACH Act This bill permits the National Aeronautics and Space Administration (NASA) to establish a research program to facilitate the testing of high-speed aircraft and related technologies, to be known as the Making Advancements in Commercial Hypersonics Program. Within a specified time period, NASA must develop a strategic plan for such research. NASA must also consult with the Department of Defense and the Federal Aviation Administration on these efforts. Under the program, NASA may not (1) fund the development of hypersonic and related technologies; or (2) enter into an agreement with certain foreign entities of concern, including entities owned or controlled by China, Iran, North Korea, or Russia.