They appear to have been overstamped in Spanish, but the one shows part of the original Chinese along the right side. I'd bet they come from Mexican visas, whether real or fake. That doesn't mean the names used are accurate.
If they abandoned these documents in Mexico, it means they most probably have fresh IDs waiting for them in this country.
There is more here than meets the eye. How did they communicate with this coyote? Few Mexicans speak any Chinese and I doubt this bunch speaks Spanish. Answer: they all spoke English. This bunch is gonna be hard to find.
What chance any of them have been students in the US?
Thank you kindly, sir.
Thats interesting,
>>This bunch is gonna be hard to find.<<
Your intelligence is stepping in front of your compassion again. Do not scare the citizens!