Original Intent: Do The States Or The Federal Government Have Ultimate authority?

"In a book entitled A Brief Enquiy into the Nature of the federal Government , written in 1840, Abel P. Upshur, a lawyer, judge, Virginia state politician, (who would become the 15th Secretary of State under Tyler, be one of the primary movers in bringing Texas into the Union, and 13th Secretary of the Navy), refutes the National Theory of the nature of the Federal government, as expounded by Daniel Webster and Joseph Story, who claimed that the Federal government was created as a national entity by a unified single people, not as an agent for the States and the people."