Agence France-Presse: House of Representatives Democrats crafting legislation to fight climate change said late Wednesday that they would seek to get 15 percent of US energy from renewable sources by 2020. The House Energy and Commerce Committee is due to start its formal debate on the “American Clean Energy and Security Act of 2009” come Monday, hoping to approve it by week’s end and send it to the full House. Democratic Representative Henry Waxman, the panel’s chairman, and Democratic …