Trump Administration To Ban Chinese Airlines From Flying To U.S.

The US Transportation Department announced a response to China's refusal to allow US carriers to resume flights, citing a violation of the US-China Air Transport Agreement. The order may take effect by June 16th unless President Trump enacts it sooner. Delta and United Airlines expressed support for the US government's actions and look forward to resuming services.

What was the deadline set by the Transportation Department for the order to take effect?

How did Delta Airlines respond to the US government's actions regarding the air transport issue?