Question

How can the Supreme Court overturn legislation approved by the congress and the president?
a.
they cannot overturn legislation once approved by the president
c.
ignoring the legislation and making it null
b.
ruling that the law is unconstitutional
d.
ruling that congress must rewrite the law

Answer 1

Ruling on constitutionality. Every law must pass a constitutional test. Plenty of laws have entered the books without being constitutional--if they never did, scotus wouldn't have job security--if they are challenged and found unconstitutional, that overturns them.

Answer 2

The answer is B, ruling that the law is unconstitutional.