America is asking the wrong question about its $40 trillion in debt, this MIT expert warns

The federal debt may be sustainable, but rising burdens may still be troublesome to the U.S. economy, says one expert.

The growth of the national debt beyond the $40 trillion mark and the increase in yields on long-term Treasuries have reignited talks of a bipartisan fiscal commission. Fiscal hawks are urging action. In addition to the towering $40 trillion debt and higher interest costs, the trust funds for Social Security and Medicar

OPINION: The Herald begins its Nation of Debt series, tallying all our borrowing.