Those are just the worst of the worst. There are a whole lot more that need to be kicked out of office.
The reason why they have been around in office longer than most Americans have been alive is because over the years politicians in both the Republican and Democrat parties have been passing laws that make it extremely hard for someone to win against them. They voted themselves job security. And in the case of the Democrats they never pay any attention to what their candidates are doing in the first place. They just think that because they are Democrats then they are the good guys and so they don't even think about it. They just vote to keep these idiots in office for decades.
