(RNS) Paul Ryan has been taking a lot of heat over the factual accuracy of claims he made in his prime time address at the Republican convention last week, but Wednesday night at the Democratic confab the GOP vice-presidential candidate – and practicing Catholic – was schooled by a popular nun on the moral shortcomings of his budget proposals. “Paul Ryan claims this budget reflects the principles of our shared faith,†Sister Simone Campbell, who became a celebrity of sorts this summer when she led the national “Nuns on the Bus†tour for social justice, told cheering Democratic delegates...