How Long Can America Keep Borrowing?

 Title of a Wall St Journal Op=Ed.  The answer is simple.  The US can keep borrowing as long as people are willing to buy T-bills.  Right now T-bills are selling briskly.  They are considered the soundest investment on the planet.  The US has an enviable record, gong back a couple of hundred years,  of never welshing on its debts.  In actual fact, we promise to repay a T-bill, with interest, after a fixed period of time, 5 years, 10 years, whatever, depends upon the specific T-bill.  We repay the T-bill owners with dollar bills, of which we can print as many as we need.  So as long as the financial community thinks US T-bills are a good investment they will keep buying them.  So long as we don't do anything really stupid to shake world wide confidence in US T-bills and US dollars, we can keep on borrowing.