Gravitt, Executrix, et al. v. Southwestern Bell Telephone Co. et al., 430 U. S. 723; Fulton v. Hecht et al., 430 U. S. 984; Davis v. United States, ante, p. 917; Juarez-Rodriguez v. United States, 430 U. S. 985; Dove v. New York et al., ante, p. 901