WASHINGTON, D.C.—U.S. Senator Tom Harkin (D-IA), Chairman of the Senate Health, Education, Labor, and Pensions (HELP) Committee, joined U.S. Senators Richard Blumenthal (D-CT), Barbara Boxer (D-CA), Dick Durbin (D-IL), Sherrod Brown (D-OH), and Ed Markey (D-MA) on a letter this week calling on the Administration to review and finalize...