I dunno if it'd work, but watching the Paulites lose their shit after hearing of it would be hilarious. Conservatives want live babies so they can raise them to be dead soldiers. - George Carlin
So, good luck globally. A vivid image of what should exist acts as a surrogate for reality. Pursuit of the image then prevents pursuit of the reality -- John K. Galbraith
global government
Bingo.
Pie in the sky at the moment, but consider the advantages:
Equalisation of opportunity - people could move as freely as capital, subject to common sense limits The instant removal of a $1 trillion annual military tax Closing of all so-called off-shore tax loopholes, which would put yet more wealth into play for productive social investment
The current system of competing nation states is ruinously expensive.
Of course you'd need the strongest democracy in history to prevent a slide towards feudalism and oligarchy. You could create that with absolute limits on personal wealth and influence and semi-random sortition of public representatives.