In an era when employers are retreating from the guaranteed benefits that once defined the American social safety net, should government accelerate or resist the trend? That's a critical question surrounding not only President Bush's proposal to restructure Social Security but also Republican plans to rethink the way the nation provides healthcare to the elderly (through Medicare) and the poor (through Medicaid). Across all these fronts, Bush and other Republicans are looking to limit government's financial exposure and shift more of the risk for ensuring pension and healthcare security to workers and retirees in the name of increasing choice. That's...