Also, just to defend the principle of States' Rights and for those who think it is synonymous with slavery -
It is little realized that without states' rights, the New England states which abolished slavery shortly after The Revolution would not have been able to do so. And when slave catchers would try to apprehend escaped slaves in the North under the Fugitive Slave Act in later years, many a northern sheriff would round up a posse, beat the crap out of the slave catcher, and tell him to go back home - clear defiance of federal law and authority. In modern times, without states' rights there would be no right for dying cancer patients to smoke cannabis (as my uncle did regularly for pain control; unfortunately, he still died of colon cancer at the ripe old age of 38 - leaving a widow and three small children behind, the youngest not even a year old at the time) or homosexuals to get married and share health benefits, rights of inheritance, and a host of other legal privileges. Under a centralized system, where my own state of California would have to answer to puritanical Christofascist politicians from the other side of the continent, these freedoms would be unknown anywhere in the country.