There is a very simple fix for Washington. Lifetime term limits.
4 year seats - 2 term maximum
2 year seats - 4 term maximum
This would be enforced at Federal and State levels.
It would help to end the "career politician" and begin to rid the country of a political "elite" class.
The next step is getting rid of fund raising & lobbying. One can only receive private donations from individuals.
The biggest issue that I see is an elite class will not police itself, so getting something like this through would have to come from executive order