除非你偷渡或成為一個對社會有重大貢獻之人才，才有可能重返美國。

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Yes, there are many cases where the people were banned for life entering the U.S. it can happen for serious crimes and felony https://www.krqe.com/news/border-report/mexican-ma... Also temporary bans could lead to permanent ban but its not the case always: https://www.researchsnipers.com/us-visa-freeze-aff...

基本上是不太可能也很少有破例

觸犯美國刑法在外國被捕後被遞送回美國受審及刑罰

你要申請美國綠卡，並且通過美國的層層檢驗關卡。... ... ... ...