The biggest problem the Left has when they gain power is people voting with their feet. Producers leave and takers remain and they run out of OPM (other people’s money) fast. One World Government is the Left’s grand idea to solve this problem - remove any possibility to run from their ministrations.
I am waiting for the first guy with a blue helmut who shows up here to collect a UN Tax. The only thing left on the ground will be his socks.