[Elsie]

They should be built in a manner similar to a maze. When the prisoner finds his way out, he is in Mexico,

I would imagine that serving time in a California prison would be like BEING in Mexico!

[muawiyah]

Some time back I proposed building a California prison ON the border ~ there'd be no wall on the Mexican side so you could just walk out anytime you wanted.

On the California side the security would be air tight ~ you'd go through a series of airlocks at different atmospheric pressures to get in.