A '90s class action case in which plaintiffs, undocumented aliens, challenged I.N.S. regulations for allegedly, unduly restricting the eligibility of undocumented aliens who might become public charges for legalization under the Immigration Reform and Control Act of 1986. In 1993, Zambrano reached the U.S. Supreme Court which remanded the case. I.N.S. v. Zambrano, 509 U.S. 918 (1993). Ultimately, the U.S. Court of Appeals for the Ninth Circuit dismissed plaintiffs' claims for lack of subject-matter jurisdiction.
See, e.g. Zambrano v. I.N.S., 282 F.3d 1145 (9th Cir. 2002) (detailing Zambrano's lengthy procedural history).