The unions’ own federal reports show 9% of workers have chosen to break away from unions since the U.S. Supreme Court’s decision in Janus v. AFSCME.

One in 10 workers in the private, for-profit sector are union members in Illinois – 1 in 12 in the nonprofit sector. But more than half of Illinois’ government workers belong to a union.

Nearly all government employees are forced to pay money to a union as a condition of keeping their jobs. And it’s not cheap. The forced dues can reach as high as $1,000 per year in the case of Chicago public school teachers. Union officials can count on hundreds of millions of dollars a year in...