For the past 11 months, the CBO reported yesterday, the U.S. Treasury has spent $1.05 trillion servicing national debt—approximately $95 billion every month.

Vance appears to try to partially walk back questionable proposal, but suggests it could be paid for with tariff revenues, despite estimated cost amounting to more than $1 trillion

The US president's US$1.35 trillion pledge raises a number of questions, and he has not specified where the money would come from.