More than five million Americans have dropped Affordable Care Act (ACA), or Obamacare, health insurance plans after enhanced federal subsidies expired, leading to sharp increases in premium costs and reigniting a political battle over former President Barack Obama's signature healthcare law.

The number of people who signed up for a health plan and then didn't pay their premium fell much more sharply than it has in years past. Trump officials blame fraud. Health policy…

New data shows 5 million Americans have lost health insurance through the ACA. A doctor breaks down the downstream consequences for public health in America.