A federal appeals court in New Orleans is weighing whether to continue blocking enforcement of a judge's ruling limiting coverage requirements under former President Barack Obama’s signature health care law.

As many as one in two Americans has some kind of illness or condition that was, at one time, considered a pre-existing condition by insurance companies before Obamacare. Here are the top 10 most common conditions for Americans, as analyzed by CNN. Hide Caption

In what's become known as "Obamacare," the president is applauded after signing his health care reform law into effect on March 30, 2010. The messy politics of the measure drew legal challenges, inspired the tea party insurgence in the 2010 midterm elections, and led the House of Representatives to hold multiple unsuccessful votes on repealing the legislation. Hide Caption