A partial government shutdown is underway. It may only last for this week, but hardliners in the House could make it drag on longer.

The U.S. House of Representatives takes up legislation on Monday that would lift a partial government shutdown that started over the weekend, with a final vote expected on Tuesday.

The measure will end the partial government shutdown that began Saturday, funding most of the federal government through Sept. 30 and the Department of Homeland Security for two weeks as lawmakers neg...