Commentary: If you want to see what failed U.S. immigration policy looks like, visit Tijuana
TIJUANA, Mexico - The invaders awoke in Tijuana slowly and fitfully Monday morning, amid coughs and soft murmurs and the voices of excitable children. I had arrived around sunrise, having walked uncontested across the border, my U.S. passport dangling needlessly in my hand, then traveling five minutes by cab to the barricaded Avenida de Cinco de Mayo. From there it was a short walk past rows of at-ease Mexican federal police, riot gear at the
