to escape violence and desperate poverty.
Mexicans didn't cross the border, the border crossed them.
With a green card, border card, or passport WITH a US visa.
Mexican workers on the US border
Otay Mesa is one of the safest, in my personal opinion.
Yes, you can cross the Mexican border with your driver's license, but it is recommended to also carry your passport for identification purposes.
A Mexican government-issued passport and a US Government-issued visa.
The amount of time it takes to cross the Mexican border on foot illegally will vary. If going through back country it may take days. If crossing at the fence it will only take minutes.
"We didn't cross the border; the border crossed us." (APEX)
US Border Agents will not accept a matricula consular for entry in the US, nor will Canadian Border agents accept one for entry into Canada. Mexican Border Agents may, however, accept a Mexican matricula consular for entry into Mexico, although you will likely be held for additional questioning.
US-Mexican border's total length is of 3,169 km (1,969 miles).
You mean on the US or Mexican side?
So far no.