But in a March letter to #AMVAC, #EPA ofcls wrote that this voluntary step was not sufficient to protect #farmworkers & others exposed to the #herbicide. The ofcls wrote that changes to #thyroid hormone levels in the #fetuses of #pregnant rats exposed to #DCPA suggested “serious #risks of concern in #humans.” …The #EmergencyAction order Tues suspends all registrations of the #pesticide….