During church services on Sunday, Catholics around the country were read a blistering letter assailing the Obama administration for an "assault on religious liberty" in the form of a coming requirement that most church-linked organizations - among them hospitals, schohttp://www.cbsnews.com/8301-503544_162-57368259-503544/catholics-hear-anti-obama-letter-in-church/?tag=stackols and universities - offer birth control coverage as part of their health care plans.