Answer:
I think it's if the petition gets enough signatures then the White House recognizes it. Not 100% sure, though.
In 1936, Landon sought the Republican presidential nomination opposing the re-election of Roosevelt. ... Landon proved to be an ineffective campaigner who rarely traveled. Most of the attacks on Roosevelt and Social Security were developed by Republican campaigners rather than Landon himself.
Governments are supposed to have limited power because they are meant to serve the people, not the other way around.
Considering that, having stricter rules mean that the rules won't jut "do what they want" when in power.
Having strict rules and strict functions to each statesmen means that they are more likely to do what they are meant to instead of turning the power of the government against the people.