Former Mexican President Vicente Fox called Tuesday for increased trade and drug enforcement cooperation rather than a wall that separates neighbors. “Building a wall is not the answer to our problems,” Fox told about 2,000 Nebraskans during a speech at the Orpheum Theater. “Instead of building walls, we should be building bridges of understanding and cooperation, and education exchange, and technology exchange, and friendship. “We are neighbors,” he said, “and we have been friends for a long, long time.” Trade represents “wealth creation and job creation,” Fox said. Not only in the United States, he said, but in Mexico, where...