My DeWalt 20-volt cordless drill/driver combo set is a beaut—powerful, smooth, comfortable in the hand, and not too expensive; I got it on sale for about a hundred bucks. It’s also a tribute to the wonders of the transnational supply chain, its components traversing the earth before they came together and found their way to my door. The drill and driver were made in Mexico, but their batteries were made in China, as were the battery charger and the handy tote bag that came with it. DeWalt, a