coin money (make their own money)
Keep Militia
According the American Government book of 2004 issued by my teacher, States cannot enter into any treaty, alliance, or confederation.
Among other things, declaring war and concluding peace cannot be done by individual states. States cannot individually negotiate treaties or pacts with other nations. There are some restrictions on...
The Constitution forbids states to Coin money.
Jonathan Franzen and Parker Posey Read State by State
The Divinity of a Sovereign State: Rogue By Definition
The Tasks of the Secretary of State
The Alaska State Fair