Here is the opinion in Brackeen v. Zinke (N.D. Tex.):
Case page with briefs here.
A federal court has held that ICWA violates the equal protection component of the Fifth Amendment’s Due Process Clause, rejecting the Morton v. Mancari argument and applying strict scrutiny. The court further held that ICWA violated the Tenth Amendment’s prohibition on commandeering state legislative functions. The court more or less summarily rejected the argument that the Indian Commerce Clause authorized Congress to enact ICWA. Finally, the court struck down the ICWA regulations.
Still, there will certainly be an appeal. The case is limited only to the parties involved.