A lawsuit winding through the courts could overturn Obamacare and cause millions of people to lose their health insurance, but Senate Republicans say there is nothing to worry about because Congress will come to the rescue. In interviews with over a dozen Republican senators, most said they believed Congress is up to the task of passing a new health bill if the Affordable Care Act is overturned by the Supreme Court, though there exists no evidence to date that Congress is actually up to the task.