Under the U.S. Constitution, state laws can be void if they interfere with federal law although the state law does not expressly contradict the federal law

• A. When a state law contradicts a federal law
• B. When courts determine a state law interferes with federal law although the state law does not expressly contradict the federal law
• C. When the state law concerns interstate commerce
• D. When the state law relates to private contracts

Answer: (B)