I think I hit on an idea to solve three problems.
1. Congress and elected officials in general
2. Money in politics
3. Alien abductions
Here is how it works we tell the Aliens they are free to abduct all the members of Congress (we'll expand it to other elected officials later) for experimental purposes.
This gets all the undesirables, do nothings, and out and out crooks out of the way. If and when they are returned we'll shuffle them off to some remote island to work in agriculture while they take 5 or decades to recover. Since their terms are cut short no need for Congressional pensions.
Since the career span of elected officials is suddenly cut short and with the high cost with little return on investment people like the Koch brothers will no longer find it cost effective to buy elections and politicians.
If we're lucky the Aliens will find politicians so unsavory they'll euthanize them rather then returning them thinking we have enough problems already without them and decide the human race is a big waste of time and the Earth is such a backwater any way.