“The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.”
I think so. The U.S. annexed Hawaii pursuant to a joint resolution of Congress in 1898. It was not done by treaty (a treaty of annexation had been signed in 1893, but newly elected President Grover Cleveland withdrew the treaty from the Senate). It was not done as...