A more thorough explanation:

The Indian Child Welfare Act (ICWA) is a federal law that governs child-custody proceedings involving a child of American Indian descent. This includes foster-care placement, preadoptive placement, adoptive placement, and termination of parental rights.

The purpose of the ICWA is to protect the best interests of Indian children, promote the stability and security of Indian tribes and families, and counteract the disproportionate foster-care placement and adoption of Indian children by non-Indians. The Act provides minimum federal standards for removing Indian children from their families and for placing them in foster or adoptive homes that reflect the values of the Indian culture.

One important feature of the ICWA is its jurisdictional aspect. In a custody dispute involving an Indian child who resides in or is domiciled within an Indian reservation, the tribe and its tribal courts have exclusive jurisdiction. In a custody dispute involving an Indian child who lives off a reservation, any state court should usually defer and transfer the case to the tribal court unless a party demonstrates good cause to the contrary.

An example of the ICWA in action is when a non-Indian family seeks to adopt an Indian child. The ICWA requires that the child's tribe be notified of the adoption proceedings and given the opportunity to intervene. The tribe may choose to place the child with a suitable Indian family or provide other alternatives to adoption.

Another example is when a non-Indian foster family seeks to adopt an Indian child who has been placed in their care. The ICWA requires that the child's tribe be notified of the proposed adoption and given the opportunity to intervene. The tribe may choose to place the child with a suitable Indian family or provide other alternatives to adoption.

These examples illustrate how the ICWA seeks to protect the best interests of Indian children and promote the stability and security of Indian tribes and families by ensuring that Indian children are placed in homes that reflect their cultural values and traditions.