1. The Due Process Clause of The Fourteenth Amendment guarantees parental rights.

2. Petitioner's dual citizenship was used against him to strip away his custodial rights.

3. The best interest of the child is a necessary component of a custody expert's testimony and court's determination.

4. Witness testimony challenging the credibility of another witness is inadmissible.

Whether the Due Process Clause of the Fourteenth Amendment protects a parent's fundamental right to custody and companionship of their child when state courts have denied such rights