No, an Appeals Court cannot 'find' a law unconstitutional. They might declare a law to be unconstitutional IN THEIR BELIEF, but they can only overturn the decision of the lower court and/or return it to them for further action or consideration. Only the U.S. Supreme Court can find a law unconstitutional.
No
no
The SC can declare a law constitutional or unconstitutional.
As long as the majority of the court agrees that the law does, in fact, violate the US Constitution, they can declare it unconstitutional and strike it down.
Yes. The Judicial Branch can declare a law unconstitutional, and it can declare presidential actions unconstitutional.
Congress cannot declare laws unconstitutional. The Judiciary Branch may declare a law unconstitutional only if it conflicts with some provision of the State or Federal Constitution. The Supreme Court can rule a law to be unconstitutional, but Congress, along with the States, can only amend the Constitution.
The Judicial branch.
The Supreme Court declare state law unconstitutional
nowhere.
judial review
Checks and balances
it can declare a law unconstitutional
The president does not have the power to declare a law unconstitutional - that power belongs to the Supreme Court. Other presidents have vetoed bills passed by Congress before they became law because the president believed they were unconstitutional. Obama has decided to direct his justice department not to enforce certain immigration laws and the defense of marriage act which he does not agree with. Other presidents have been lax about enforcing some laws and court rulings, Andrew Jackson for one.