Arches Health Plan, a membership cooperative that was born out of the Affordable Care Act and insures 66,000 Utahns, has been ordered out of the insurance market for 2016. Arches insures more low-income Utahns on the federal exchange, healthcare.gov, than any other company besides Select Health. But it also has customers who get their insurance on their jobs and individuals who buy plans through insurance agents or brokers.