Related Program: Crosscurrents Crosscurrents: June 19, 2012 By Seth Samuel • Jun 19, 2012 Related Program: Crosscurrents TweetShareGoogle+Email Mexico's presidential elections; 9 million expected to be in the Bay Area in 2040—where will they live?; and battles with urban wildlife. Tags: Crosscurrents PodcastTweetShareGoogle+EmailView the discussion thread. Related Content Americans watch Mexico closely on election day By Peter O'Dowd • Jun 19, 2012 Photo by Peter O'Dowd Standing on the edge of an unfinished railroad bridge outside of Brownsville, Texas, businessman John Wood can see across the Rio Grande into Mexico. "We are tied together," Wood said of the two countries. "It's kind of like an umbilical cord." The rail line will connect Brownsville with Matamoros, Mexico, when completed. It's the first of its kind to connect the countries in a century.