What happened in the States Rights Debate?

The Federal government and State governments were arguing about the division of powers over the entire nation. The Federal government pushed for a unified national government, constantly moving toward an expansion of their power. The States argued that they could nullify laws which they didn't agree with. Eventually, the country split in two, with the southern states rallying together to fight the Federal government, as the Confederate States of America. The CSA lost the war, and that pretty much settled the debate. I would say that the debate ended when the Seventeenth Amendment to the Constitution was passed. Since that point in history, the States have had no check on the Federal government via the Senate. If you want an opinion, the Seventeenth Amendment should be repealed.