Four U.S. senators, Chuck Grassley (R-IA), Joe Manchin (D-WV), Joni Ernst (R-IA) and John Kennedy (R-LA), sent a letter to the Federal Trade Commission and Horseracing Integrity and Safety Authority Monday asking for clarification and explanation about HISA's ability to meet its upcoming July 1 implementation deadlines for the Horseracing Integrity and Safety Act (HISA). "The Authority publicly stated in a December 2021 press release that it will not implement the Anti-Doping and Medication Control program by the statutory deadline of July 1, 2022," the letter said. "This deadline is...