"Beyond these paltry authorities, the Court adds only the argument that we should not “encourage a kitchen-sink approach to any litigation challenging the validity of statutes.” Ante, at 17. I agree—but that is not the situation in this case. The two claims here are very closely related. They are two parts of the same bill. They both impose new requirements on abortion clinics. They are justified by the State on the same ground, protection of the safety of women seeking abortions. They are both challenged as imposing the same kind of burden (impaired access to clinics) on the same kind of right (the right to abortion, as announced in Roe v. Wade, 410 U. S. 113 (1973) , and Casey, 505 U. S. 833 ). And petitioners attack the two provisions as a package. According to petitioners, the two provisions were both enacted for the same illegitimate purpose—to close down Texas abortion clinics. See Brief for Petitioners 35–36. And as noted, petitioners rely on the combined effect of the two requirements. Petitioners have made little effort to identify the clinics that closed as a result of each requirement but instead aggregate the two requirements’ effects. For these reasons, the two challenges “form a convenient trial unit.” Restatement (Second) of Judgments §24(2). In fact, for a trial court to accurately identify the effect of each provision it would also need to identify the effect of the other provision. Cf. infra, at 30."