At the start of a busy week in the bond market, the U.S. can thank Portugal and the other...

|By:, SA News Editor

At the start of a busy week in the bond market, the U.S. can thank Portugal and the other troubled euro-zone countries for keeping its own borrowing costs in check. Until Europe's problems are resolved, sovereign debt investors are likely to favor the least-worst market - U.S. government debt - which should help absorb heavy U.S. debt issuance this week.