More than 70,000 Thoroughbred racing participants and administrators across the country have now registered with the Horseracing Integrity and Safety Authority (HISA), in compliance with HISA's Registration Rule which went into effect on July 1, 2022. To date, 30,061 covered persons and 41,953 covered horses have been registered. As previously announced, HISA will require compliance with its Registration Rule in order to race beginning Mar. 27. Covered Persons and Horses who are not in compliance with the rule will be unable to race until they register in the HISA Portal....