Horseracing and Safety Integrity Authority chief executive Lisa Lazarus on Monday sent a letter to Alan Foreman, the chairman of the Thoroughbred Horsemen's Association (THA), warning THA members of "potentially significant disruptions" to the industry based on the HISA Authority's interpretation of legal strategies being pursued by the Horsemen's Benevolent and Protective Association (HBPA). With an application by the Authority pending in the United States Supreme Court that would stay a Horseracing and Safety Integrity Act unconstitutionality mandate that has yet to be released by the U.S. Fifth Circuit Court...