Rising U.S. Debt Spooks Bond Investors, Drives Treasury Yields Higher

Bond investors worried about rising U.S. deficit and debt issuance, driving Treasury yields higher.

Fiscal concerns growing since summer when Treasury announced plans to increase debt issuance.

156% rise in federal deficit over past year from falling revenues and higher spending.

Some investors believe bond vigilantes have limited power now given Fed's large role.

Recent selloff brought yields back to pre-crisis levels, increasing attractiveness of bonds.