Won't work on earth, as there is no intelligence to make it work.

Only Greed and Power by lesser minds work on this planet.

This is what should happen, before Alien Contact is made, as far as
government goes;

http://www.worldparliamentgov.net/constitution.htm

As anyone can see, it won't happen in their lifetime, unless forced, by
an outside intervention: but it will happen, when and if humanity wants
a meaningful  contact with ET.

Prime