The federal government has spent $4.1 billion to implement health insurance exchanges created under the Affordable Care Act from fiscal 2010 through 2014, and is expected to spend a total $6.2 billion through fiscal 2015, according to an Inside Health Policy analysis of numbers released Monday (Feb. 2) by the CMS in its fiscal 2016 budget justification. That total is expected to rise to $8.4 billion if President Obama's fiscal 2016 request is fulfilled. The overall number includes $71...