The federal government remains shut down, in what is now the longest shutdown in U.S. history. Many federal workers have missed paychecks, including air traffic controllers, who are working unpaid.

Environmental groups warn the proposal to change the definition of "waters of the United States" would eliminate crucial safeguards for "countless" bodies of water.

The federal government shutdown continues and Republicans and Democrats appear no closer to an agreement to end it. Many federal employees have now missed the first full paycheck since the shutdown ...