Answer:
What gives the Constitution the final word in regards to this country's legal code is the Supremacy Clause.
Step-by-step explanation:
The Supremacy Clause is a clause in the US Constitution that provides that the constitution and laws of the United States, as well as international treaties concluded by the United States, are the supreme law of the nation. This clause also obliges state judges to be governed by the US Constitution, laws, and international treaties, even if individual state constitutions and laws are contrary to federal law. State constitutions also recognize the supremacy of the US federal constitution. The clause is contained in Article VI of the US Constitution.