Jan 20, 2006 — This week the Department of Homeland Security announced it will require U.S. and Canadian citizens to show new ID cards at the Canadian border. Officials say they're necessary to tighten security. The U.S. border patrol uses another method to stop smugglers and potential terrorists - road checkpoints inside the U.S.-Canada border. The Army Corps of Engineers is doing a feasibility study on whether to make a border checkpoint on the Adirondack Northway permanent and staffed 24 hours a day. 4 people died and more than 50 were seriously injured in accidents there in 2004. But there are also dozens of border patrol checkpoints on smaller roads across the North Country. The Border Patrol says they're a critical second line of defense for stopping terrorism and smuggling. But some citizens and civil liberties groups say they're an invasion of privacy and may not be very effective. David Sommerstein reports.