Powers not delegated to the U.S by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.
So basically, they are reserved to the states and left up to them to decide.
Speed limit reduced to 35 mph, rationing of goods, and victory gardens
6. Evacuate Americans if necessary.
7. Spain.
8. Cuba.
9. Guam.
10. Protectorate.