posted by meg .
who was more successful in dealing with Congress and why? President Kennedy or President Johnson?
That is easy. President Johnson was able to pass all of Kennedy's proposed legislation. Why? LBJ was a very forcefull person, as compared to JFK who tried often to lead by inspiration and argument. LBJ often just gave offers that no one (dared) could not refuse.
It probably helped LBJ that JFK was an icon, and it was invoked by LBJ.