“… The CTBA report perpetuates four major myths in its pursuit of scrapping Illinois’ flat income tax. … Myth No. 1 A shift to a progressive income tax is a tax cut for Illinois families. … Myth No. 2 Illinois’ structural deficit has persisted despite major cuts in spending over the past two decades.  … Myth No. 3 The CTBA progressive tax plan will increase economic growth. … Myth No. 4 Minnesota proves that a progressive income tax is good policy.”