The an_cap position on immigration is open borders which is the opposite of "people who can be deported if they complain about their working conditions". Feel free to check the comment history.
FWIW, the union (CWA) via its Seattle affiliate tried to get OPT banned, a visa status that many readers of HN benefited from - https://law.justia.com/cases/federal/appellate-courts/cadc/2.... I encourage HN readers to better understand the relationship between unions and immigration before deciding whether they are in favor of joining/supporting unions.
"As an Academy member I could publish such a paper without any review (this is no longer true, a sad commentary on aspects of science publishing and the promotion of originality)."