One might argue that the PEOPLE should not elect Senator Dodd, but only a majority of Connecticutt voters are required to send him back to office.
One could argue that the 17th amendment was a mistake. But WE didn't pass it. And even if it weren't the case, the CT legislature could easily appoint a Dodd to the Senate, and the people of the other 49 states would be powerless.
It just shows how the national government at all times has the upper hand. It shows that it is too much to ask for Americans at large to be aware of every single bad idea being passed in the national Legislature.
Behold! The reason for the 10th Amendment revealed!