Hall County will likely lose half its current insurance providers within the Affordable Care Act marketplace next year, according to an analysis by the Kaiser Family Foundation. The move would affect about 10,400 residents who buy individual exchange coverage. The exit of insurers, coupled with rising premiums, has re-energized the political firestorm over what is commonly referred to as “Obamacare,” the federal health care legislation passed in 2010 by Congress without Republican backing that created a network of market exchanges where those without health insurance could buy plans.