CBO

The ceiling kicked back in at the start of the year, since when the Treasury has been using special accounting maneuvers to make good on all obligations on time.

Leading up to President Donald Trump's April 2 deadline on levies, the options traders prefer to own exposure to US government debt due in five years.

A rise in U.S. Treasury yields from very low levels in 2020, has resulted in diminished debt affordability, with interest payments-to-revenue hitting about 30% by 2035.

The Congressional Budget Office has found that restructuring the mortgage market would save the government billions of dollars but may increase the cost of housing.