Quick answer (verified 2026-07-08 by CivicFlare):
Official USCIS answer to "How many Supreme Court justices are usually needed to decide a case?": Five (5). Learn historical context and practice online with CivicFlare.
OFFICIAL USCIS ACCEPTED ANSWER(S)
A majority of five out of nine justices is typically required to decide a Supreme Court case.
The USCIS includes questions about American-government / System to ensure new citizens understand the foundational structures, laws, and history of the United States. Knowing the correct answer demonstrates your attachment to the principles of the U.S. Constitution.
When the USCIS officer asks you, "How many Supreme Court justices are usually needed to decide a case?", speak clearly and confidently. You do not need to give every possible answer if more than one is accepted — stating just one of the official answers (such as "Five (5)") is completely sufficient to earn full credit.
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