CHICAGO (CBS 58) — Times are changing in the fight against fentanyl. Wisconsin used to be solely a destination state for illicit drugs, but lately, the state’s starting to also be a primary transit state for drugs destined for Minneapolis along the I-90 corridor. That may be why the latest busts here are in bulk, and bigger than ever. We got an exclusive look inside the Drug Enforcement Administration’s lab in Chicago where those street drugs are being tested every day…