Business Green: The US yesterday joined with the EU in formally submitting its proposed emission target for 2020 to the UN under the Copenhagen Accord. As widely expected, the US stuck with its negotiating position at last month’s Copenhagen Summit saying that it would cut greenhouse gas emissions 17 per cent on 2005 levels by 2020, although it said the target was dependent on domestic climate change legislation being passed. The submission, which will be added to the annex of the Copenhagen …