Posted from The Hill: "We continue to ask people to limit their travel but we also know people are going to come here and they're more than likely are not going to quarantine for 14 days if they do," Bowser said during a news conference.

Bowser said the city won't be strictly enforcing the rules with checkpoints or other requirements.

Gottlieb: New coronavirus strain 'probably here in the United States' December deadliest month of COVID-19 pandemic “Nobody is going to be asking you at the airport, or on bridges, or roads, or the train station to show your papers," Bowser said.

Instead, Bowser said the advisory is intended to be a tool to help private institutions manage travelers.

Hotels, universities, employers, houses of worship and other similar private enterprises will be allowed to ask visitors about their travel and require proof of a negative COVID-19 test."