WASHINGTON—President Barack Obama has used a very hands on approach to try to revive the economy. He has, as promised in his campaign, attempted to remove agencies or institutions which are not operating efficiently or effectively. Last week, Obama forced General Motors C.E.O. Rick Wagoner to resign, citing that GM’s troubles were largely Wagoner’s fault. Obama’s control over GM did not stop with just its C.E.O. Obama’s changes in office have been as specific as selecting new cars for his