Unstable funding for federal statistical agencies such as the Census Bureau and the Bureau of Economic Analysis, both based in Suitland, Md., is putting at risk the government statistics the U.S. uses to track changes in the country's economy and population, officials and data users warn. Brian Witte/AP hide caption toggle caption Brian Witte/AP The stability of the federal government's system for producing statistics, which the U.S. relies on to understand its population and economy, is under t...