How did John C. Calhoun of South Carolina view the power of the states and the power of the federal government? A.<===========My Guess He thought the federal government had final authority over states in all matters. B. He believed that states could ignore other states' laws but must obey federal laws. C. He believed strongly in the Union and the power of compromise in balancing rights. D. He thought states could decide which federal laws to obey and which to ignore.