Final answer:
Judicial review is the principle that concerns the compatibility of a law or governmental action with constitutional rights such as free speech.
Step-by-step explanation:
The principle of judicial review concerns the compatibility of a law or governmental action with fundamental constitutional rights such as free speech. Judicial review is the power of the courts to declare laws and government actions unconstitutional if they violate the Constitution. It acts as a check on the legislative and executive branches of government, ensuring that they operate within the limits set by the Constitution. For example, if a law passed by Congress restricts free speech, the Supreme Court can use judicial review to strike down the law as unconstitutional.