The Chinese food scene at the US / Mexico border

I love learning about hybrid cuisines that are shaped by a convergence of languages, countries and cultures. One cultural exchange I had never considered was the influence of Mexican food and Chinese cuisine on the US border. This is not a new mash-up either, with cultural exchange going back as much as 100 years. Mexicali, Mexico, right across the US border, is home to as many as 200 Chinese restaurants. Fascinating!