By Molly Messick
Wyoming – Each year, the federal Bureau of Land Management spends millions of dollars rounding up wild horses. The animals are protected by an act of Congress that declares them "living symbols of the historic and pioneer spirit of the West." The BLM says there are more than 4500 wild horses in Wyoming - about a thousand more than it wants to see on the ground. And the bureau has an agreement with the state to keep numbers down. Helicopter roundups are the main way of keeping the herds' size in check, but there's a growing consensus that the system doesn't work.