To spell out the joke, here is the famous "caution: illegal immigrants crossing" sign on I-5 just north of San Diego. I didn't take this picture, but I've seen the sign often enough to know that it is real.
[Update: a number of readers have pointed out that the sign isn't there any more. I haven't driven that road in a few years so haven't seen it myself recently, so I'm willing to believe that it's been taken down. It lives on in memory and iconography.]
I admire Cucapá's panache in presenting this beer. Also from their product line: a stout called La Migra.
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