Republican Sen. Bill Cassidy is making an offer to Democrats he hopes they won’t refuse: If their states like Obamacare, they can keep it. A doctor who worked for decades in charity hospitals and clinics before joining Congress, Cassidy plans to introduce soon an updated version of his health care plan aimed at giving states flexibility to keep Obamacare, nix it entirely or transition to a new system of health savings accounts and automatic health plan enrollment.