supreme court [ us ]
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Cabinet members - WRONG ANSWER
Judicial review is the power to declare a government action that violates some provisions of the constitution to be null and void. This is as a result of the action being in contravention with the provisions of the constitution.
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Unconstitutional
The judicial branch is the main actor that decides whether or not an action of the government is unconstitutional. However, technically the President can decide not to enforce parts of a law Congress passes on the basis of unconstitutionality through constitutional signing statements.
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they decided to do the constitution
Yes. There have been many examples of this over the years; a recent case in the news is the lawsuit filed against the state of California alleging that the ban on same-sex marriages violates citizens' rights under the 14th Amendment to the US Constitution.