Flying into the United States could be about to get more difficult, as the Centers for Disease Control and Prevention (CDC) considers new rules for all international travelers.

In a White House press briefing on December 1, Dr. Rochelle Walensky, the director of the CDC, revealed that the CDC “Is evaluating how to make international travel as safe as possible, including pre-departure testing closer to the time of flight and considerations around additional post-arrival testing and self-quarantines.”

Federal officials reportedly told the Washington Post that these new rules “Would require everyone entering the country to be tested one day before boarding flights, regardless of their vaccination status or country of departure.” According to the Washington Post, officials are also considering implementing requirements for all travelers to get retested three to five days after arriving in the U.S. and to self-quarantine for seven days even after receiving a negative test result. 

The Washington Post reports that there could be fines and penalties for those that do not follow the testing and quarantine travel rules. 

Current rules for international travelers to the United States require all fully-vaccinated U.S. citizens to show proof of vaccination and a negative COVID test taken within three days of departure. Non-vaccinated U.S. citizens must show a negative COVID test taken within one day of departure.

The CDC currently recommends (but doesn’t require) that vaccinated travelers get tested 3-5 days after returning to the U.S. and that unvaccinated travelers get tested and quarantine for seven days upon return.