Good article. They sent them back on a boat trip 500 to Veracruz 500 miles into Mexico. It was not a pleasant trip. The guest worker program was for 400,000 Mexicans a year with up to only 12 to 52 weeks.
According to this article 85% of the Mexicans here are illegal.
Singapore’s guest workers must return home periodically and stay home for a while before reapplying to come back. It’s meant to stop them from getting too attached. Singapore says guest workers should not be separated from their families for too long.