President Joe Biden delivers remarks about COVID vaccinations in the South Court Auditorium at the White House, Wednesday, May 12, 2021, in Washington. (AP Photo/Evan Vucci)

A customer drives from a Chevron station after it ran out of gasoline, Wednesday, May 12, 2021, in Miami. State and federal officials are scrambling to find alternate routes to deliver gasoline in the Southeast U.S. after a hack of the nation's largest fuel pipeline led to panic-buying that contributed to more than 1,000 gas stations running out of fuel. The pipeline runs from the Gulf Coast to the New York metropolitan region. (AP Photo/Marta Lavandier)

Secretary of Transportation Secretary Pete Buttigieg speaks during a press briefing at the White House, Wednesday, May 12, 2021, in Washington. (AP Photo/Evan Vucci)

A hand written sign is posted on a gas pump, showing that the service station is out of all grades of fuel Wednesday, May 12, 2021, in Charlotte, N.C. Several gas stations in the Southeast reported running out of fuel, primarily because of what analysts say is unwarranted panic-buying among drivers, as the shutdown of a major pipeline by hackers entered its fifth day. (AP Photo/Chris Carlson)

Secretary of Transportation Secretary Pete Buttigieg listens during a press briefing at the White House, Wednesday, May 12, 2021, in Washington. White House press secretary Jen Psaki and Environmental Protection Agency Administrator Michael Regan look on. (AP Photo/Evan Vucci)