President Obama receives a briefing on Hurricane Sandy at the Federal Emergency Management Agency in Washington. At right is FEMA Administrator William Craig Fugate. (Nicholas Kamm / AFP/Getty Images)

President Obama has cancelled a trip to Green Bay, Wis. scheduled for Tuesday, in order to stay in Washington and monitor Hurricane Sandy. 

The president already cancelled an appearance in Orlando on Monday, heading back to D.C. to reach the White House before the worst of the storm.

"The president's priority right now is the safety and security of Americans who are in the path of the storm and who will be affected by it," White House spokesman Jay Carney told reporters as Obama headed back from Florida. "It's essential in his view that he be in Washington, one of the areas that will be affected, and where his team is to oversee that effort."

Vice President Joe Biden is continuing to campaign, as is former president Bill Clinton.