I will travel from Chihuahua to Tijuana to cross into the US on foot and I want to know if I have to carry my Mexican passport or can I carry another document that proves Mexican nationality? -Thank you!!

You must present a valid passport, especially when you return you will be asked for it

Hello, to cross through CBX it is necessary to present a valid passport.

Hello To enter the US via Cross Border Xpress, you are asked to present your valid passport and visa. Excellent trip!

Only with your American Visa and the boarding pass and pay for the CBX crossing