Reps. George Miller (D-Calif.) and Joe Courtney (D-Conn.) have requested that the Government Accountability Office (GAO) investigate gaps in regulatory oversight of the West, Texas fertilizer plant where an April 17 explosion killed 15 and injured more than 200. Miller, the senior Democratic member of the Education and the Workforce Committee, and Courtney, the senior Democratic member of the Workforce Protections Subcommittee, also asked the GAO to catalog similar facilities across the country and examine the risks to workers and surrounding communities.