“For the first century of the country's existence, anyone could land here and walk right off the boat with no papers of any kind, just as Gumpertz did. Coming here "illegally" did not even exist as a concept.”https://twitter.com/inthepastlane/status/962628226022625280 …
https://www.theatlantic.com/business/archive/2016/09/undocumented-immigrants-and-taxes/499604/ … they pay lots of taxes, which funds Social Security and other programs.