When the Supreme Court declares a law that was created by Congress unconstitutional, it is an example of presidential veto. popular sovereignty. checks and balances. habeas corpus.
This is not a presidential veto- a presidential veto is when the presidents vetoes a bill.
It's part of the separation of powers and of checks and balances -this is the correct answer- which means that one branch of the government (here the Court) can check on the other branches (here the Congress)
