US fiscal deterioration is emerging as a growing risk for global markets, with rising Treasury yields potentially putting pressure on equities and limiting the Federal Reserve's room for manoeuvre, brokerage firm Jefferies said in its latest research report.

Heavy borrowing, increased spending and tax cuts by Democratic and Republican administrations have long raised concern.

U.S. public debt surpassed US$40 trillion as lawmakers shrug off calls to contend with historically wide fiscal deficits. Find out more here

Millions of Americans who are already struggling with the cost of living could eventually feel the effects of persistently high debt as US gross federal debt surpassed $40…