A bill that would create a legislative framework for a covered bond market in the U.S., as well as a potential competitor for the Federal Home Loan Bank system, was introduced this week in the Senate, a counterpart to a long-standing covered bond bill awaiting final approval in the House.The United States Covered Bond Act, S. 1835, sponsored by Sens. Kay Hagan, D-NC, and Bob Corker, R-TN, is nearly identical to a House bill of the same name sponsored by Rep. Scott Garrett, R-NJ, and Carolyn Maloney, D-NY, H.R. 940.