The Trump administration announced Wednesday it has ordered the State Department to limit certain visas for Cambodia, Eritrea, Guinea, and Sierra Leone because those countries have refused to accept the return of its nationals who are deported from the United States.

“International law obligates each country to accept the return of its nationals ordered removed from the United States,” Acting Secretary of Homeland Security Elaine Duke said in a statement. “Cambodia, Eritrea, Guinea, and Sierra Leone have failed in that responsibility. The United States itself routinely cooperates with foreign governments in documenting and accepting its citizens when asked, as do the majority of countries in the world. However, these countries have failed to do so, and that one-way street ends with these sanctions.”