Treasury Dept to invoke ‘extraordinary measures’ as Congress misses debt-ceiling deadline

The Treasury Department will begin conducting emergency cash-conservation steps on Monday to avoid busting the federal borrowing limit after a two-year suspension of the debt ceiling expired at the end of July.

Economists say those so-called extraordinary measures will allow Treasury to pay off the government’s bills without floating new debt for two to three months. After that, Congress will need to either raise or suspend the borrowing limit or risk the U.S. defaulting on its obligations.

The limit, a facet of American politics for over a century, prevents the...