That's the amendment that says U.S. senators are elected by their states' voters instead of by their states' legislatures. (Before the amendment passed, some states had direct election of senators, others used legislative election.) Some RWs want to repeal it, on some sort of federalist or "states' rights" grounds.
Let's be clear: The Senate does not give the states, as states, a voice in Congress, and it never did. That is how it would have worked if senators had been in effect state ambassadors, not only chosen by their state legislatures, but serving at their pleasure and subject to recall by them, and taking orders from the state capital. As it happened, the Framers instead worked out a system where a senator is politically autonomous for the duration of his six-year term, which is a very different thing. Under that system, how is election by state legislatures preferable to popular election?
Let's be clear: The Senate does not give the states, as states, a voice in Congress, and it never did. That is how it would have worked if senators had been in effect state ambassadors, not only chosen by their state legislatures, but serving at their pleasure and subject to recall by them, and taking orders from the state capital. As it happened, the Framers instead worked out a system where a senator is politically autonomous for the duration of his six-year term, which is a very different thing. Under that system, how is election by state legislatures preferable to popular election?