WASHINGTON (Reuters) - As expected, the United States Senate on Tuesday voted to kill Republicans' latest attempts to modify an emergency government funding Bill, just hours after federal agencies, national parks and programs began shutting down.

The Senate voted 54-46 to table the request from the House of Representatives to start formal negotiations to end the impasse and make changes to President Barack Obama's health-care law, including a year's delay to a requirement that individuals acquire health insurance.