It’s back, persistent abuse of the Federal Government’s H1-b program which allows certain professional workers to come to the United States as guestworkers in newly created jobs. It’s not supposed to allow Americans long in their jobs top be tossed aside because the new imports are cheaper. Patrick Thibodeau of computerworld.com has been THE reporter way ahead on this story. He still is, as reports on IT workers at some of America’s best-known companies. Embarrassed once, some companies vowed they’d do better. But have they?