Checks and balances
In the United States, the power to declare a law unconstitutional lies with the judicial branch of government, specifically the federal courts, including the Supreme Court.
Supreme Court to declare acts of Congress and state laws unconstitutional
The federal courts can check the Presidents power by that courts can declare executive actions unconstitutional.
"The federal courts can check the Presidents How_can_Federal_Court_check_the_presidents_powerby that courts can declare executive actions unconstitutional."
The federal Judicial Branch, consisting of the US District Courts, the US Court of International Trade, the US Court of Appeals Circuit Courts and the US Supreme Court can declare acts of Congress unconstitutional, but only if the act has already been signed into law and is relevant to a case before the court.The US Supreme Court is head of the Judicial Branch and is the ultimate authority on constitutionality.
No, that is a power reserved for the courts of the Judicial Branch.
The Judicial Branch may declare laws related to cases before the courts unconstitutional.
Judicial review is the prerogative of the Supreme Court of the US. It is their ability to overturn passed laws that they find unconstitutional.
Yes, US District Courts can, and do, declare laws unconstitutional. Any court can declare a law unconstitutional if the law is relevant to a case they're trying or reviewing; however, the government would probably appeal the case all the way to the Supreme Court to get a definitive answer. The US Supreme Court is the ultimate arbiter of constitutionality, and has final authority over questions of constitutionality.
True
Judicial :)
No. Only the Judicial branch has the Constitutional authority to declare laws unconstitutional.