No, the question is where in the Constitution does it designate the Supreme Court should interpret and decide if a law violates the Constitution? Did the Constitution assume power not given to it in the Constitution. Again where is this in the Constitution?
Read Article 1, 2, and 3 (3 is the judicial) of the constitution. Then read up on the seperation of powers. It is all right there for you. You may also want to read about our system of checks and balances
It is the judicial branch's job to try federal cases and interepret the laws and executive orders for constitutionality.
Nope, the Constitution never gave the Court the power to interpret and declare laws of Congress, laws of the states, acts of the president unconstitutional, the Court simply assumed those power in a famous case, Marbury v. Madison, and then followed it up with more cases supporting the thesis. Each of those cases that supported Marbury are found in most, if not all, school textbooks. And if you went that far check out nullification.
But the power to declare an act of Congress, a state or presidential act unconstitutional is not in the Constitution. This is one of the things taught in govenment classes and probably never made much sense or even remembered.
Was there a point you are trying to make here?