Former Costa Rican president, a Trump critic, says U.S. revoked his visa

• In recent Facebook posts, Arias criticized Trump for throwing "threats" to Ukrainian President Volodymyr Zelensky during a contentious White House meeting and compared him to a "Roman emperor, telling the rest of the world what to do."

Driving the news: Arias, who was president between 1986 and 1990 and again between 2006 and 2010, said in a news conference Tuesday he received a brief email from the U.S. government alerting him his visa had been revoked.

• He said the email provided no reason for the revocation but cited Section 221(i) of the Immigration and Nationality Act, which allows the secretary of State and consular officers to revoke visas at their discretion.
• "The communication was very terse, it does not give reasons. One could have conjectures,"Arias said, per a translation.
• A State Department spokesperson told Axios they would not discuss individual visa cases when asked for comment.

Zoom out: The State Department has emphasized scrutiny of foreign nationals' and visa applicants' conduct and speech on social media during the administration's sweeping immigration crackdown.

• In some cases, foreign-born travelers have been barred from entering the U.S., including a French researcher who French government officials said was turned away because of messages he sent that were critical of the Trump administration's academic research policies.

Catch up quick: Secretary of State Marco Rubio visited Costa Rica in February, where he said the U.S. would help current President Rodrigo Chaves "punish" the attitudes of officials who "are not working for the good of their national interests."

• Last month, Rubio estimated the U.S. may have already pulled more than 300 visas.

Go deeper: Columbia protest leader's arrest tests immigrants' free-speech rights