It won't happen. It's not like the country is besieged by an ultimate evil in DC, but all the states are white and fluffy. In fact, all levels of government are poisoned by absolute power. Huge evil in DC is followed by large evil in states' governments, then by medium evil in counties, and smaller evil in cities. Policies of San Francisco are a good example, and they are done on the city level. You will find evil and agendas even lower, like on the level of public schools! Nearly every government bureaucrat has a God complex.
There is yet another reason why this is happening. All these elected representatives are a countable set of people. They is actually not too many of them. Individuals can be easily corrupted, especially when they are facing the easy choice of doing the bidding of their donors and become reelected, or going their own way - after which they will be labeled as crazies and quickly defeated at the nearest election. If you aren't willing to bow and kiss the hand of your master, you just don't go into politics. Few people buck that trend.
Imagine a Senate composed of people who don’t give a rip what the left-media say about them. Imagine a Senate immune from popularity polls
Now you see where the roots of monarchism are? Such Senate is no different from a single Czar who is also immune from popular opinion.
As matter of fact, monarchism works great as long as you have a good monarch. The trouble is in cases when the monarch is not so good. The office of Czar is always heavily contested, and usually the most ruthless applicant walks up to the throne stepping over the dead bodies of his opponents - and often over the bodies of his supporters too.
Words fail me.
Uh, you are aware of the purpose and designed structure of the Framers' Senate, right?