A special sign-up window for health insurance shoppers is open through May 15th in Wisconsin. People stuck in a bad plan or unable to find coverage have a new opportunity. President Joe Biden ordered government health insurance markets that had ended the annual enrollment periods in December to re-open. The Affordable Care Act – sometimes known as Obamacare – has created state-based insurance markets for people to buy individual coverage, either for themselves or their family. The president’s order applies to 36 states that run their insurance market through the federal platform, but the rest of the states are offering a similar extended window for signing up.