Actually this points out a problem nearly as big as congress itself.
Staffers.
You say the word and most people imagine these young pages fresh out of college but nothing could be further from the truth. The reality is that most staffers are in house lobbyists who have left long careers in the industries they represent.
John McCain’s former chief of staff went directly from McCain’s office to VP of Boeing and is now back in DC acting as GOP chief of staff for republican armed services committee staff.
In contrast was Allen West. Every one of his small staff were former low level Veterans Administration employees.
That’s why the ten counties surrounding DC are the wealthiest counties in America.