Miguel was not good casting

There wasn't any hint of him being Mexican with his accent. Some foreigners can learn English as mimics and their accents are dead on, but a poor child running the border? Unlikely.

They should have cast an actual Mexican.

Speaking of mimics, I once lived with a Mexican guy who spoke English with an American accent. He was fanatical about not being "Mexican".

I tried to speak Spanish to him once and he said "English is basically my first language" and I asked how that was possible growing up in Mexico. He said he started learning young.
(Still didn't make sense).

One day he was telling me a story of how he stumpted his thumb but he was talking about his foot. I said "thumb? Don't you mean big toe?"

English his first language my arse!

I looked it up and in Spanish you say "thumb of foot".

He was sprung. Imposter.