Reuters: Washington rejected stiff 2020 targets for greenhouse gas cuts by rich nations at UN talks in Bali on Monday as part of a "roadmap" to work out a new global pact to fight climate change by 2009. "It’s prejudging what the outcome should be," chief negotiator Harlan Watson said of a draft suggesting that rich nations should aim to axe emissions of heat-trapping gases by between 25 and 40 percent below 1990 levels by 2020. He said that Washington wanted the …