Visa appointments at the U.S. Embassy in Colombia have been canceled following a dispute between President Donald Trump and his Colombian counterpart Gustavo Petro over deportation flights that nearly turned into a costly trade war between both countries.

When Colombia’s president, Gustavo Petro, refused military planes carrying deportees, infuriating President Trump, he revealed how heated the question of deportations has become.

Colombia avoided tariffs that would have a devastating effect on its economy, but visa restrictions issued on Sunday by the U.S. State Department are still in place.