NEW YORK — Enhanced tax credits that helped reduce health insurance costs for many Affordable Care Act enrollees expired overnight, leading to higher healthcare expenses for millions of Americans as we enter the new year. This development follows a 43-day government shutdown over budget disputes, with both Democrats and moderate Republicans feeling the pressure to find a solution for voters increasingly concerned about affordability. The change primarily affects those who purchase their own insurance, such as freelancers and small business owners, many of whom are facing steep premium increases. It really bothers me that the middle class has moved from a squeeze to a full suffocation, said Katelin Provost, a single mother, commenting on her rising insurance costs. As the midterm elections approach, lawmakers are grappling with the implications of these increased health costs on enrollment and overall public opinion.