The Trump administration is proposing to ask visitors from countries with visa-free travel to the U.S. to submit five years of their social media history before they can enter.

The Trump administration is proposing to ask visitors from several dozen nations that enjoy visa-free travel to the U.S. to submit additional personal information before entering the country, including five years of their social media history, the Department of Homeland Security said in a notice this week.

Citizens of 42 countries enrolled in the visa waiver program can generally come to the U.S. for up to 90 days for tourism or business travel, without needing to apply for a visa at an American embassy or consulate, a process that can take months or even years.

The list of countries in the visa waiver program includes many European nations like the United Kingdom, Germany and France, as well as some U.S. allies around the world, including Australia, Israel, Japan, New Zealand and South Korea.