506 U.S. 139 506 U.S. 139 113 S.Ct. 684 121 L.Ed.2d 605 PUERTO RICO AQUEDUCT AND SEWER AUTHORITY, Petitionerv.METCALF & EDDY, INC. No. 91-1010. Argued Nov. 9, 1992. Decided Jan. 12, 1993. Syllabus * Petitioner, an autonomous Puerto Rico government instrumentality, moved to dismiss the diversity action brought against it by respondent, a private firm, […]