The 1848 Mexican-American War officially split us apart, but we’ve always held hands to spite our disapproving parents. Our border features cities and towns — San Diego and Tijuana, Calexico and Mexicali, Andrade and Los Algodones — cut off from each other by an arbitrary line that residents never let get in the way of creating business and family ties. The San Diego-Tijuana area hosts a $230-billion economy that entrepreneurs on both sides consider one whole; $44 billion in goods passed through the Otay Mesa commercial crossing last year alone.

Source: Los Angeles Times August 15, 2018 11:15 UTC