The Centers for Disease Control and Prevention drafted a sweeping order last month requiring all passengers and employees to wear masks on all forms of public and commercial transportation in the United States, but it was blocked by the White House, according to two federal health officials.

The order would have been the toughest federal mandate to date aimed at curbing the spread of the coronavirus, which continues to infect more than 40,000 Americans a day. The officials said that it was drafted under the agency’s “quarantine powers” and that it had the support of the secretary of health and human services, Alex M. Azar II, but the White House Coronavirus Task Force, led by Vice President Mike Pence, declined to even discuss it…

“The approach the task force has taken with any mask mandate is, the response in New York City is different than Montana, or Tuscaloosa, Alabama,” said the official who asked not to be identified because he did not have permission to discuss the matter. “Local and state authorities need to determine the best approach for their responsive effort depending on how the coronavirus is impacting their area.”