Copyed from "THE FREEDOM ANSWER BOOK" by Judge A. P. Napolitano.
A very nice little book....
The 17th denied consent of the governed. It is as easy as that.
Every republic prior to ours featured, by definition, participation of the people either directly or through some form of representation. The law acted on the people, and the people were present in the legislative body. Perfect sense.
The American republic was different, for the constitution acted not only on the people, but the states as well.
In order to be consistent with republican theory and experience, the states MUST have a seat at the legislative table if the government is to constitutionally act on them. To remain consistent with fundamental republicanism, every clause in the constitution which dealt with the states should have been repealed upon ratification of the 17th.
Now that of course can't be done because the states, people and the government they created are thoroughly intertwined in their duties and powers.
Removing the states from congress makes as much sense as removing the people from congress. None.
That is my point, the states are essential to the smooth operation of our republic and cannot be removed without causing internal contradictions which must lead to dissolution or tyranny.