9:26 PM Dec 30, 2013
President Barack Obama and first lady Michelle Obama greet military personnel at Joint Base Pearl Harbor-Hickam, Hawaii, after they arrived for a family vacation, Saturday, Dec. 21, 2013. (Cory Lum/Pool/Abaca Press/MCT)
WASHINGTON (MCT) – Nearly four years after it was signed and after months of scrambling and uncertainty, President Barack Obama's landmark bid to guarantee Americans health security takes full effect Wednesday as the Affordable Care Act begins delivering health care coverage to millions nationwide.