Complex sentence: Assurant Health has been repeatedly found to cancel health policies for some customers that have serious medical conditions, and 12 states have criticized the firm for denying claims, with most of the states levying fines against Assurant.
Split into simpler sentences: Assurant Health has been repeatedly found to cancel health policies for some customers that have serious medical conditions. Twelve states criticized the firm for denying claims, with some states levying fines against Assurant.