WASHINGTON — Within the war between Republicans and Democrats over the federal spending rages an affray over disposable forks. Under the tutelage of Representative Nancy Pelosi during the years when Democrats ran the House, her party moved to “green” the Capitol with several initiatives, including obligating the food vendor for the three main House cafeterias to provide compostable cups and utensils. But the newly empowered House Republicans have ended the program, and plastic forks and foam cups have returned. The move enraged many Democrats, who argue that the House is now doing something bad for the environment and retrograde. “If you look at the best companies to work for, nobody is questioning things like composting and recycling,” said Representative Earl Blumenauer, Democrat of Oregon, who wrote a letter this week…