As the U.S. restricts some travelers from entering amid an Ebola outbreak, experts warn that broader bans can have unintended consequences.
Biden himself offered no explanation -- or reassurance -- to the public.
The first incident was a suspected Chinese spy balloon, which entered U.S. airspace on Jan. 28 north of the Aleutian Islands in Alaska, according to a senior military official.
Per the official, the object shot down over Lake Huron was detected on radar over Montana Saturday, according to ABC News.
Under federal law, airlines that cancel flights are required to give cash payouts to customers if they decide not to travel, experts say.
Travelers are asked to check their flight status before heading to the airport as flight delays are expected.
