On this day in history, May 31, 1913 the 17th amendment to the US Constitution providing for the direct popular election of senators was declared ratified.
This was one of the two or three worst mistakes in the history of our republic. It might not seem obviously so, but it destroyed most of whatever idea of federalism survived the Civil War. In the name of cheap egalitarianism, they seriously upended one of the critical checks and balances.
For starters, senators had a layer of legislators between them and the public which made it much easier for them to say no to lots of expensive give-aways. It generally gave the state governments input into the federal government.
The constitution is a complex instrument. A great deal of sophisticated thought went into the setup of the system. People are idiots to go around pulling apart the careful structure of the thing for cheap good feelings.