Read the fucking Constitution.
How about you try reading it, and try to imagine how the different people are supposed to represent their constituents and do what it is you think they are supposed to do.
How do they agree to write legislation - how does that work?
Was it the secretaries who were supposed to write the legislation for the legislator to vote on???
Is that in the Constitution???
If you would have taken the time to actually read and understand what the Constitution says. . . Maybe you wouldn't have so many questions about it.