WASHINGTON, Nov 4 (Reuters) - U.S. Transportation

Secretary Sean Duffy warned Tuesday that if an ongoing

government shutdown continues another week it could lead to

"mass chaos" and could force him to close some of the national

airspace to air traffic.

"If you bring us to a week from today, Democrats, you will

see mass chaos, you will see mass flight delays. You'll see mass

cancellations, and you may see us close certain parts of the

airspace, because we just cannot manage it," Duffy said at a

press conference Tuesday. Democrats say Republicans are to

blame.