George Noble says U.S. debt issuance is running at 7% of GDP even as the economy grows just 2% and unemployment stays near record lows. With the 10-year yield a

George Noble says U.S. debt issuance is running at 7% of GDP even as the economy grows just 2% and unemployment stays near record lows. With the 10-year yield around 4.7%, he questions why bond markets price roughly the same rate a decade out.