Who reviews laws to decide whether it is within the guidelines of the constitution?

The Supreme Court

Explanation:

The Supreme Court is the highest court in the federal judiciary of the United States. One of the most important tasks of the Supreme Court is to review laws in order to establish whether they are within the guidelines of the Constitution. Therefore, the Court has the ability to invalidate a statute if it violates the Constitution. It can also strike down presidential directives for this reason.

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