Obviously not heaven, but pretty close. The DEA helped the Sinaloa cartel own 80% of the drug market in Chicago by partnering with it to eliminate its competitors:
This is a good article and describes how dynamic the drug war is. Currently the Sinaloa Cartel is really struggling to keep it to together, they can't even control their hometown of Culiacan.
http://www.businessinsider.com/the-us-government-and-the-sin...