Moody's Investors Service voices concerns about the long-term creditworthiness of federal securities, citing exploding health care and Social Security obligations; Senator Clinton proposes a stimulus package that would expand entitlements to low-income Americans; Citigroup has to go abroad to find capital to cover losses that arose because of improper risk management: All these things are linked. Mrs. Clinton's program fundamentally misses the underlying dilemma. Our short-term economic difficulties are the result of bad private risk management of financial portfolios; our longer-term predicaments are bad risk management of federal entitlement programs. Unduly risky portfolios of private investments have been funded; enormous...