Which of the following is NOT typically a function of state courts?

The selection of “interpreting federal laws” highlights a critical aspect of the separation of powers and jurisdiction in the U.S. legal system. State courts primarily deal with matters of state law, covering a broad range of issues including family law, criminal cases, and civil disputes, which all fall under state jurisdiction.

While state courts may encounter cases that involve federal laws, they do not have the primary responsibility or authority for interpreting those laws. Interpretation of federal laws falls under the jurisdiction of federal courts, ensuring that federal statutes are uniformly applied across all states. This division helps maintain an organized legal framework where federal and state systems operate within their defined spheres, reinforcing the principle that federal laws are best adjudicated in courts designed to handle federal matters.