Professional hockey players come from all over the world. They come from South Africa, Canada, Kazakhstan, Norway and there is even one from Washington, D.C. Well, okay, two come from the Washington area. Jeff Halpern from Bethesda signed with the Capitals as an undrafted free agent in the 1990s. When the Caps declined to sign him two years ago, he joined the Dallas Stars, who have him in a five-year, $10 million contract. That leaves…