Portland, Maine — U.S. Sen. Olympia Snowe describes a scene out of a Rockwell painting: With Washington crippled by a blizzard, President Obama worked the week before Christmas with a fire roaring in the fireplace in the Oval Office. Outside the window, his daughters played in the snow with their dog. Inside, Snowe writes in a new book, she delivered sad news to the president, whom she described as gracious. The Maine Republican couldn’t support Obama’s health care overhaul because her ideas, solicited in more than a dozen calls and eight face-to-face meetings, were left out of the final bill. Senate Majority Leader Harry Reid …