The process that is occurring when a court invalidates a law for being unconstitutional is known as JUDICIAL REVIEW.
A good example was the Judiciary Act of 1803 which was established o Marbury v Madison. In this case, the court decided that the acts of Congress infringe the Constitution or it is unconstitutional.
The correct answer should be the "Continental Congress"
The Continental Congress was a convention of delegates from the thirteen colonies who was in charge of America during the war of independence and a bit before it.