text: New York v. U.S. saw the first application of this in over 55 years to invalidate a legislative act.
full_question: New York v. U.S. saw the first application of this in over 55 years to invalidate a legislative act. In Printz v. U.S., Scalia invalidated the Brady Handgun Violence Prevention Act using this as justification. A recent and notable application of this was in the Supreme Court case National Federation of Independent Business v. (*) Sebelius, in which the majority opinion used this to invalidate parts of the Affordable Care Act which supposedly coerced states into opting for Medicaid expansion. This constitutional amendment originally included the word “expressly,” but it was later omitted by Roger Sherman at the objection of James Madison. For 10 points, name this Constitutional amendment which enshrines American federalism, the last in the Bill of Rights.
first_sentence: New York v. U.S. saw the first application of this in over 55 years to invalidate a legislative act.