Who judges the laws?

Answer 1

The law, whether it is intra vires, or ultra vires is always decided by the judiciary in exercise of its judicial power, constitutional authority and jurisdiction. It is also popularly known as "judicial review of legislative competence" under the Constitutional and Administrative Law.

The Parliament, or the State legislature has Constitutional authority to legislate the law on any particular subject, so as to achieve its object. Obviously, the law that is legislated and enacted by the legislature has to be tested on the touch-stone of reasonableness and fairness. If, the statute is unjust, unfair, unreasonable, arbitrary and sanctions "unguided, unbridled, and sweeping power, authority and jurisdiction that shocks the constitutional conscious", the law is often declared "ultra vires" the Constitutional provisions.