President Obama's health insurance reform - the Affordable Care Act, or Obamacare - brought insurance coverage to millions of low-income Americans through the expansion of the federal Medicaid program. But President-elect Donald Trump and Republican majorities in Congress have vowed to repeal the law, leaving questions about how it will be replaced. Foreshadowing the national debate to come, NewsHour Weekend Special Correspondent Chris Bury traveled to Kentucky, a state with one of the biggest drops in uninsured residents since Obamacare went into effect and with a Republican governor who promised to roll it back.