WHAT'S OPEN?: Here's how the shutdown is affecting key parts of the federal government

Thousands of federal employees began their weekends gripped with doubt, uncertain of when they'll be able to return to work and how long they'll have to go without being paid after a bitter political dispute in Washington triggered a government shutdown. And now that the shutdown has extended into the work week, federal employees entered Monday unsure of when their next paycheck would come. Many government operations will continue — US troops will stay at their posts and mail will...