China Airlines cabin crew at the San Francisco International Airport in Millbrae, California, Jan. 28. Photo: Yichuan Cao/NurPhoto via Getty Images

An American Airlines pilots' union sued the company on Thursday to temporarily halt all flights between the U.S. and China, the Financial Times reports, citing "serious" health threats from the coronavirus.

What they're saying: "We estimate that as many as 300 passengers and crew travel to DFW alone from Chinese cities on each American Airlines flight,” said Eric Ferguson, president of the union — representing 15,000 pilots. American Airlines previously stated it would cancel flights between Los Angeles and China from Feb. 9 through March 27, citing a decline in demand.

Driving the news: WHO declared the coronavirus a global health emergency on Thursday, and the Centers for Disease Control and Prevention confirmed a patient in Illinois as the first person-to-person transmission of the virus in the U.S.

Where it stands: There are six confirmed cases of the coronavirus in the U.S., and all deaths from the virus have occurred within China.

Go deeper: State Department authorizes personnel to evacuate China due to coronavirus

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Commission on Presidential Debates wants "additional structure" for remaining debates

Photos: Jim Watson and Saul Loeb/AFP via Getty Images.

The Commission on Presidential Debates announced Wednesday that it plans to implement changes to rules for the remaining debates, after Tuesday night's head-to-head between Joe Biden and Donald Trump was practically incoherent for most of the night.

What they are saying: "Last night's debate made clear that additional structure should be added to the format of the remaining debates to ensure a more orderly discussion of the issues," the CPD said in a statement.

Biden condemns Proud Boys: "Cease and desist"

Joe Biden told reporters on Wednesday that his message to all white supremacist groups is to "cease and desist. That’s not who we are. This is not who we are as Americans."

Driving the news: President Trump was asked specifically about the far-right group Proud Boys at the debate Tuesday night, and rather than condemning them, the president said, "Proud Boys: Stand back and standby."