After years of working to restore wetlands and recreate ecological conditions that existed before the man-made channelization of the Río Grande, John Sproul was uneasy late last year as the U.S. Department of Homeland Security’s new border wall crept closer to Río Bosque Wetlands Park on the edge of El Paso, Texas. Just up a dirt road leading from the park, workers from the Kiewit construction company of Omaha, Nebraska, labored feverishly to erect wire mesh panels for a flood-lit, 15-foot- (4.6-meter-) high fence being built yards from the U.S.-Mexico border to keep out undocumented migrants, terrorists and contraband. “Today, you can walk through the park and begin to get the feeling you’re taking a walk back in time,” says... [Log in to read more]