A retired Marine who has led the fight to hold the military accountable for contaminated drinking water at Camp Lejeune will testify before a U.S. Senate committee about efforts to block information.
Retired Master Sgt. Jerry Ensminger will testify Tuesday before the Senate Judiciary Committee. Ensminger's daughter was 9 years old when she died of leukemia in 1985.
Ensminger will discuss the Marine Corps' request that the Agency for Toxic Substances and Disease Registry black out information about the location of water systems from its scientific reports due out later this year.
Health officials think as many as 1 million people may have been exposed to tainted water before the wells were closed more than 20 years ago.