In District of Columbia V

In District of Columbia v.Heller (2008) , the Supreme Court ruled that

A) constitutional amendments had to be ratified within seven years of being proposed.
B) individual citizens, apart from any association with a state militia, had a constitutional right to own a gun.
C) the supremacy clause gave the Court the right to declare acts of Congress unconstitutional.
D) natural law could be imposed by the executive branch.
E) the system of checks and balances placed undue burdens on the president's ability to conduct foreign policy.