Gideon V. Wainwright (which was part of the 6th amendment) it basically had to deal with right to counsel so that means that the poor people who can't really afford a lawyer has to get an assigned lawyer pronto.
I’m not sure when you say U.S. but the Republicans supported the idea of state rights. (If you could clarify you question I could help more).
Answer:
power to negotiate with the foreign countries as individual states
Explanation: