When you are voting for a Congressional Rep or a U.S. Senator you are not voting for a person who will write laws. Your rep only votes on legislation to approve or disapprove of constructs that are written by outside groups and sold to them through lobbyists who work for those outside groups.
While all of this is happening the same outside groups who write the laws are providing money for the campaigns of the politicians they need to pass them. This construct sets up the quid-pro-quo of influence, although much of it is fraught with plausible deniability.
This is the way legislation is created.
A perfect explanation. This needs to be shouted from the house tops. Many folks in the USA are completely unaware of this process. Needs lots more attention. President Trump is the man to do it.
The law writing lobbyists perform a service for the Republic for those Congressmen who graduated from Public School. Writing and figuring are hard for them.