Family law cases continued to explode in numbers across the country as the 2018–2019 reporting year saw a wide variety of issues. As families crossed state or country boundaries, many cases required determinations of which state’s law applied to the dispute. Other cases involved federal law or use of constitutional principles. Appellate courts usually upheld trial judges who reviewed the validity of marriage contracts and separation agreements, awarded custody and support of children, determined who was a parent, and decided what constituted marital property. A large number of cases this year explored jurisdictional questions, especially those raised by interpretation of uniform laws such as the Uniform Child Custody Jurisdiction and Enforcement Act.