A honourable effort, but...
...El Norte was a clumsily-made movie. The script was weak and sometimes filled with clichés. (I lost count at the number of Guatemalan visual and verbal clichés that were thrown into the film.) The acting ranged from poor to terrible. The film-making was similarly sub-par.
I also found it off-putting to see two Mexicans in the lead roles as Guatemalan Maya. The brother's Mexican accent, in particular, was evident throughout, while the sister was pure mestiza - I would just shake my head seeing her in indigenous traje. I understand that it would have been next to impossible to recruit Guatemalan Mayans in the roles - or just mixed-race Guatemalans - but could the producers not have made an effort to employ Mexicans who resembled indigenous people? Mexico has a significant minority of them.
Having said that, I do commend the writers and producers for bravely bringing this story to screen when the savage Guatemalan civil war still at its peak (early 1980s). It was also great to see Hollywood shine a light on the plight on illegals in the USA and the enormous risks to life and to family that they take in crossing the border.