You may read the rationale from the Long Bet prediction linked below, the market will resolve YES once a supermajority of countries of the world place no restrictions on immigration or emigration or residence (the original prediction says 95 % but I have taken the liberty of diverging from that and say over 2/3 of countries). The market will resolve NO following January 1st 00:01 UTC 2103 if this is not the case by then.

Ask for clarification if needed.

The Long Bet prediction that inspired this market:

https://longbets.org/121/

02003-02103 (100 years): One hundred years from now the world's governments will formally and legally recognize the basic human right of mobility: a person may live anywhere on earth if they agree to obey local laws. - Long Bets