The Illinois state constitution lets the rights to keep and bear arms be subject to ‘the police power’. The head justice recused hisslef and the other 6 tied 3-3 so the lower court decision remained standing.

Illinois Supreme Court upholds ‘assault weapons’ ban

DEERFIELD, Ill. (WLS) — The Illinois Supreme Court issued a split-second decision Thursday allowing a ban on assault-style weapons in the Village of Deerfield to remain in effect.

The ordinance bans weapons such as AR-15’s, AK-47’s and Uzis. AR-15 rifles have been used in various mass shootings, including the school shooting in Parkland, Florida.
The Deerfield Village Board voted unanimously to ban some semi-automatic firearms in April 2018 by approving an amendment to the village’s gun ordinance. The ordinance also prohibits high-capacity magazines.

Deerfield’s amended ordinance was patterned after Highland Park’s ban on high-powered weapons. That ordinance survived a 2015 legal battle that went to the United States Supreme Court.