ASTM/SEI-certified helmets have been a subject before the U.S. Congress since March 29, when Sen. Tom Daschale (D-S.D.) reintroduced for Sen. Christopher J. Dodd's (D-Conn.) the Christen O'Donnell Equestrian Safety Act of 2004 (S.2254), which establishes a federal standard for equestrian helmets.