Copenhagen follows two other European countries in beefing up its travel guidance for citizens going to America after a spate of detentions at customs.

Two countries, Denmark and Finland, have updated travel advisories for their transgender citizens traveling to the United States, joining other European countries that have issued similar cautions to citizens.

In a shot at President Donald Trump’s border policies, a number of European countries have issued warnings about their citizens traveling to the United States. CTV News in Canada reported that the warnings were issued because citizens of various nations could face trouble at the border due to Trump policies.