The Justice Department has taken initial steps in the formal process to reschedule marijuana as a less dangerous drug. Crain’s cannabis reporter John Pletz talks with host Amy Guth about what the move would mean for the bottom line of Chicago cannabis companies.Plus: Johnson hints at a new tax on professional services, major construction at O'Hare won't start till next year, developer unveils renderings for $1.1 billion project near casino site and Crain's brand-new list of top architecture firms.