A man looks over the Affordable Care Act signup page on the HealthCare.gov website in New York in this photo illustrationVia David Morgan and Sharon Begley WASHINGTON/NEW YORK (Reuters) – A knowledge heart important for permitting uninsured Americans to buy health coverage below President Barack Obama's healthcare law went down on Sunday, halting on-line enrollment for all 50 states within the latest drawback to hit the program's afflicted rollout. The info heart operated by using Verizon's Terremark skilled a connectivity difficulty that led to it to close down, affecting the federal govt's already drawback-plagued online marketplace Healthcare. …