Associated Press: Utilities, steelmakers and oil industry lobbyists have tried to ease the pain of President Barack Obama’s push to curb global warming, and they’ve gotten an early return on the millions of dollars they’ve spent influencing Congress. Lawmakers determined to get a deal on climate change are going along with valuable concessions to polluters. It’s part of the political trading necessary when powerful industries are involved. The firms, many of which depend on coal — the biggest …