Social Security’s finances may be in worse shape than thought. The Social Security Trustees — who release a report each year on the health of the program that supports about 70 million retirees and people with disabilities — have been relying on overly optimistic forecasts for future fertility rates, according to a blog report from the Cato Institute. Those forecasts are at odds with projections from the U.S. Census Bureau and the Congressional Budget Office (CBO) — the nonpartisan federal agency that provides Congress with independent analysis of budgetary and economic issues — which both have much more sober forecasts...