Law is not static. Congress or Parliament makes its legislation, ambiguity arises in corner cases, Courts are asked to sort it out. Courts try to divine the intention of Congress or Parliament. If Congress or Parliament disagree with that interpretation then yes: it's up to them to change the law. Otherwise, by failure to further Act, they conceptually support the Court's interpretation of their intent.
Law is not static. Congress or Parliament makes its legislation, ambiguity arises in corner cases, Courts are asked to sort it out. Courts try to divine the intention of Congress or Parliament. If Congress or Parliament disagree with that interpretation then yes: it's up to them to change the law. Otherwise, by failure to further Act, they conceptually support the Court's interpretation of their intent.