Which of the following statements about federalism is true?

Federalism is a constitutional allocation of power between the national and state governments, establishing a system where both levels of government have authority over their respective domains. The U.S. Constitution, specifically in Article VI, establishes the Supremacy Clause, which states that federal law takes precedence over state law when there is a conflict. This principle ensures that federal statutes, treaties, and constitutional provisions supersede state laws, thereby promoting uniformity in the application of federal law across all states.

The chosen statement accurately reflects this foundational principle of federalism, highlighting that federal law is supreme over state law. This supremacy ensures that states cannot enact laws that contradict federal legislation, which is crucial for maintaining a cohesive legal system across the country.

In contrast, other options incorrectly characterize the relationship between state and federal laws or misstate the application of federalism in legal matters.