President Barack Obama, declaring himself “exasperated,” said he won’t negotiate with Republicans on the U.S. budget until they reopen the government and raise the debt ceiling without conditions.

Grocery stores on Army bases in the U.S. are closed. The golf course at Andrews Air Force base is open.

A Republican proposal to approve spending for a handful of federal agencies was swiftly criticized by Democrats, extending the impasse that forced the first partial U.S. government shutdown in 17 years.

Obamacare’s opening day drew millions of consumers to the law’s core insurance exchanges, offering supporters and investors hope that if the websites can stay up and running, customers will follow.

More than a dozen House Republicans who want to drop attempts to undermine the health-care law and reopen the government are meeting among themselves and with House Speaker John Boehner -- and he’s listening.

The U.S. government began its first partial shutdown in 17 years, idling as many as 800,000 federal employees, closing national parks and halting some services after Congress failed to break a partisan deadlock by a midnight deadline.

Merck & Co., the second-biggest U.S. drugmaker by sales, will fire 8,500 workers and revamp its research and development after seeing new medicines delayed by U.S. regulators.

The U.S. congressional standoff that shut down the government for the first time in 17 years is a buying opportunity for stock investors, if history is any guide.

For many supporters of the Patient Protection and Affordable Care Act, continued resistance to the law isn’t just mistaken. It’s downright pathological.