Sarah Jane Tribble, Kaiser Health News and Lauren Weber The federal system meant to stop health care business owners and executives from repeatedly bilking government health programs fails to do so, a KHN investigation has found. That means people are once again tapping into Medicaid, Medicare, and other taxpayer-funded federal health programs after being legally banned because of fraudulent or illegal behavior. In large part that’s because the government relies on those who are banned to self-report their infractions or criminal histories on federal and state applications when they move into new jobs or launch companies that access federal health care dollars. The Office of Inspector General for the U.S.…