Director Jorge Darnell made about a handful of films (and most of those in Mexico) but here we have what looks like a genuine Italian-Mexican co-oproduction. Most of the crew is Italian and the cast features a trio of 70's regulars, Mimsy Farmer, Luigi Pistilli and Fernando Rey - all whom turn in some really great performances, and a nice soundtrack from il maestro Riz Ortolani.
IMDB
http://www.imdb.com/title/tt0171304/referenceSergio Fuentes is a bored fisherman who decides to take the dangerous trip across the border into the USA and see what life is like on the other side... Cynical and downbeat just about every step of the way, life for immigrants in 1970's New York is as brutal as it gets with everyone looking to beat up or exploit a Mexican.
Having endured a year of Mexican bashing from Mr. Trump on TV I think this film is more relevant than ever. There are also some great location shots of what I'm guessing is 42nd St, complete with cinema marquees

Based on some simple web searches this one seems to have passed just about everyone's radar - probably because, until now, we only had an old Italian VHS or an even more obscure N. American release also on VHS (Monterey Video) which I've not seen any trace of.
Luckily, Minerva/RARO come to the rescue posting the film in HD 1080p (possibly, either way it looks great) on their channel:
https://www.youtube.com/watch?v=CnG01r4oSyw&t=867s