Matt,
Same scenario as above except the state(s) would be Alabama, Mississippi, Louisiana and Tennessee and the people would be Americans. Now in order for us to protect ourselves from becoming overrun with Mexicans, don't you think we should have the right to withdraw from the Union? Keep in mind the United States government has not protected the western states. Now if you do not believe we should be able to withdraw, should we have the right to enact laws to protect ourselves? Right now neither state, nor city can pass such law even though some are trying, but most have been declared illegal by the US government.
GP