WASHINGTON, D.C.—Today, Senator Tom Harkin (D-IA), Chairman of the Senate Health, Education, Labor, and Pensions (HELP) Committee, Rep. Henry A. Waxman (D-CA), and Rep. Peter Welch (D-VT) sent a letter to Iowa Attorney General Tom Miller, California Attorney General Kamala D. Harris, and Vermont Attorney General William H. Sorrell. The...