The Congressional Budget Office released new data Thursday estimating that by 2016, some 4 million Americans will face penalties for failing to buy health insurance as mandated under Obamacare. Additionally, the CBO estimated that 25 percent of those facing the penalty will be at the low end of the income scale; the penalty is expected to apply to about 400,000 Americans living below the federal poverty level (projected for 2016 to be $11,800 for a single person and $24,000 for a family of four).