(May 1, 2019, 11:34 AM EDT) -- WASHINGTON, D.C. — The Ninth Circuit U.S. Court of Appeals correctly held that foster parents in Arizona cannot challenge the constitutionality of the Indian Child Welfare Act (ICWA) in a class action because the adoption of the children in question mooted their claims, U.S. government respondents tell the U.S. Supreme Court in an April 17 brief in opposition to certiorari (Carol Coghlan Carter, et al. v. Tara Katuk Mac Lean Sweeney, et al., No. 18-923, U.S. Sup., 2019 U.S. S. Ct. Briefs LEXIS 1479)....