Opinion: The ACA is working

Six years after its tumultuous rollout, the Affordable Care Act is finally working more or less as intended. Presidential contenders should take notice. Obamacare, as the ACA is known, offers many lessons for politicians aiming to shake up the health care system, whether it’s doing away with private insurance, as Elizabeth Warren and some other Democrats want to do, or hacking away at protections the ACA itself now offers, as President Trump is attempting.