The White House Makes It Official - PREPARE FOR SHUTDOWN

The White House made it official 15 minutes early: The federal government shut down for the first time in 17 years at midnight on Tuesday.

The Office of Management and Budget offered guidance for federal agencies to begin preparations for a partial government shutdown.

"Unfortunately, we do not have a clear indication that Congress will act in time for the President to sign a continuing resolution before the end of the day tomorrow, October 1, 2013," OMB Director Sylvia Burwell wrote.

The full memo is below:

OMB shutdown memo