Read this quote from Alexander Hamilton.

The interpretation of the laws is the proper and peculiar province of the courts. A constitution is, in fact, and must be regarded by the judges as a fundamental law. . . . If there should happen to be an irreconcilable variance between the two . . . the Constitution ought to be preferred to the statute. . . .
–Alexander Hamilton, The Federalist No. 78
Hamilton's statement is fundamental to which concept?

Hamilton's statement is fundamental to the concept of judicial review, which refers to the power of the courts to review and interpret acts of the legislative and executive branches of government and determine their constitutionality.