So basically you want Congress and the Judiciary to only ever make sentences shorter, yes? Now, I do think Us sentences are too long and serve little social purpose, but I'm a rehabilitationist (probably because I'm a Euro utilitarian type), whereas a majority of Americans seem to be retributionist, and deontological ones at that. In general, Americans like throwing the book at criminals, or people they perceive to be criminals.
>So basically you want Congress and the Judiciary to only ever make sentences shorter, yes?
I didn't say "ever" -- if sentences were too low then the maximums should go up, but we are clearly in no danger of that happening because as you point out, "Americans like throwing the book at criminals, or people they perceive to be criminals." There is a reason that we don't elect Supreme Court justices.