3Qs: Larger issues in debt-​​limit debate

On Monday, Trea­sury Sec­re­tary Tim­othy Gei­thner told Con­gress the U.S. has reached its debt ceiling — the limit on how much money the gov­ern­ment can borrow. Not only has raising this limit been at times a con­tentious polit­ical issue, it also raises larger issues related to the U.S. economy’s long-​​term health, says Kamran Dad­khah, asso­ciate pro­fessor of eco­nomics at North­eastern University.