"We write to express our outrage that one of your contractors, Kellogg Brown & Root (KBR), is going after 12 sick veterans as part of the ongoing Qarmat Ali legal battle," the lawmakers wrote to Secretary Carter. "We feel confident that Americans don't want their tax dollars supporting these scorched-earth tactics and, because the Department of Defense (DoD) may be responsible for KBR's legal bills, we urge you to exercise your authority, take over this litigation, and bring it to a fair conclusion for all parties."