CHICAGO – City Council members passed a bill that would ban electronic cigarette smoking indoors, the Chicago Tribune reports. Mayor Rahm Emanuel approves the measure, which woud treat e-cigs like other tobacco products under the Clean Indoor Air Act.

Not everyone on the council supported the measure. “It is a ban, because you’re making people go outside, you’re treating it just as you would an analogue cigarette or tobacco cigarette,” said Alderman Rey Colon. “You’re lumping it together in the same category even though you don’t really have any proof that it has any harm. You’re saying ‘We’re going to regulate first and ask questions later.’”

The ordinance also mandates that e-cigs have to be placed behind the counter, in an effort to discourage smoking by minors. Last year, the General Assembly okayed a bill that would ban the sale of e-cigarettes to youth. That measure also required merchants to ID anyone who looks under 27 and tries to purchase electronic cigarettes.

The mayor pushed to have the bill passed, saying the regulations go hand-in-hand with other tobacco restrictions, such as forbidding the sale of menthol cigarettes close to public schools. New York City already prohibits e-cigarette smoking in public, while France passed legislation lumping electronic cigarettes in with other tobacco products for regulations.