Principal Mutual Life Insurance Co. v. McOrp510 U.S. 819 SCOTUS1993Check TreatmentCheck Treatment510 U.S. 819 Principal Mutual Life Insurance Co.v.MCorp. No. 92-1893. Supreme Court of United States. October 4, 1993. 1 Appeal from the C. A. 5th Cir. 2 Certiorari denied.