U.S. Legal Doctrine refers to the established principles and rules that guide the interpretation and application of laws in the United States. These doctrines are shaped by various sources, including the U.S. Constitution, statutes, and judicial decisions. They help ensure consistency and predictability in legal outcomes. Legal doctrines can cover a wide range of topics, such as contract law, tort law, and constitutional law. They are often developed through case law, where courts interpret laws and set precedents that influence future cases. This system allows for the evolution of legal standards over time.