...During the debate, Sen. Kerry... said that he would adopt a "pay-as-you-go" approach to ensuring financial solvency to Social Security. President Bush's response, though apt, needs amplification. ...[P]ay-as-you-go is effective when... we are concerned with surging discretionary spending.... defense, roads and highways, judicial services, and homeland security.... Under pay-as-you-go rules discretionary spending can be increased only if Congress is willing to finance it 100% out of other spending cuts and tax increases. The political undesirability of both financing methods serves to check both higher deficits and growth in the size of the government. On the other hand, the pay-as-you-go approach...