As long as you mean 5 years of uninterrupted work visa (YM doesn't count) where ...

fennecfoxy on Aug 9, 2021 | parent | context | favorite | on: Wealthy people are renouncing American citizenship

As long as you mean 5 years of uninterrupted work visa (YM doesn't count) where losing your visa forces to to leave w/ 1 month's notice, then sure, they have "open borders".