in every federal case, determining the power of the court to entertain the suit." In re Gucci, 126 F.3d 380, 387- 88 (2d Cir. 1997) (citing Warth v. Seidin, 422 U.S. 490, 498, (1975)). Striking the pleading of a putative litigant is appropriate where the litigant lacks standing. United States v. All Ri