Chicago Mayor Emanuel backs marijuana decriminalization from Reuters: Politics CHICAGO (Reuters) - Chicago Mayor Rahm Emanuel said Friday he would back a proposal that would decriminalize possessing small amounts of marijuana, the latest major U.S. political figure to support diminished penalties for the drug's use. feeds.reuters.com/~r/Reuters/PoliticsNews/~3/_ayJfynOBe4/us-usa-marijuana-chicago-idUSBRE85E10J20120615