who fired multiple lawsuits against heisel, claiming it is violating constitutionality.hese groups would rather have the states and state elected racing officials mandate what is going on instead of turning it over to the higher power congress has approved. >> you mentioned there have been clusters of deaths and multiple reasons for horseracing deaths. when you get clusters like the one we saw at santa anita in 2018, i think 30 horses died, a cluster of seven in a month at laurel park. the string of seven at churchill downs. is there a commonality through those clusters? >> some of the injuries occurred during training, some in actual races. with the deaths at churchill downs, it was a variety of situations. two in races on derby day. another one when a horse flipped . it may have been spooked by something it saw and it flipped and hurt itself and was not able to be saved. generally there are a variety of causes. it can be a catastrophic leg injury. some horses have dropped dead of heart attacks. each case can be individual. there is obviously standards by which they inv