Chicago CityMayor's Office issued the following announcement on May 30.
“Stronger, smarter state laws that regulate gun dealers, crack down on straw purchasers and keep illegal guns off our streets are long overdue. I am grateful to Senator Harmon and Representative Willis for advancing this issue of importance to every Chicagoan and every resident of Illinois. The ball is in Governor Rauner's court now. He can choose to make Illinois safer by signing this bipartisan bill into law, or stand in the way of progress by vetoing it.”
Original source can be found here.