Every week, the TDN posts a roundup of the relevant Horseracing Integrity and Safety Act (HISA) related rulings from around the country. Among the key rulings from the last seven days, trainer Natalia Lynch has been handed down a combined four-year suspension by an arbitrator, and a combined $55,000 in fines and arbitration costs. Lynch had faced sanctions for two separate issues. One was for the possession of banned thyroid drug, Levothyroxine. The other was a positive test for another banned substance, Altrenogest—a synthetic progestin used in horses for the purpose of suppressing...