In May 2013, the U.S. Treasury had spent up to its statutory debt limit. Treasury Secretary Jack Lew wrote House Speaker Boehner that the Treasury would "begin implementing the standard set of extraordinary measures that allows the Treasury to continue to borrow and spend even after it has hit the legal debt limit."
Through October 16, 2013, the Daily Treasury Statement showed "Total Public Debt Subject to Limit" at $16,699,396. The "16" is trillions; the numbers are in millions. The "Statutory Debt Limit" (the next line on the Daily Treasury Statement), showed, day-in and day-out: "$16,699,421. The difference was $25,000,000: This figure adds back the zeros not shown on the daily posting.