CHICAGO (WLS) -- Open enrollment for the Affordable Care Act begins Saturday for residents in Illinois and most states. Increases in premiums are expected to be the biggest since the ACA, known as ObamaCare, became law more than a decade ago.

A trip to the hospital may become unaffordable for millions of people who may become priced out of their health insurance. Half a million Illinoisans rely on health insurance through the Affordable Care Act, including Jessica Kazaniwskyj and her husband, who are small business owners. Currently, their insurance costs them $2,000 a month.

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"We just got a letter saying it would be $4,000, yeah, would be our new premium," Kazaniwskyj said. "So that's double, yeah, double. That's not sustainable.

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