Iranian Foreign Minister Mohammad Javad Zarif has said changes to the U.S. visa-waiver program breach the landmark nuclear agreement between Tehran and world powers.
Washington recently tightened security requirements of its visa-waiver program, which allows citizens of 38 countries to travel to the United States without visas.
Now, people from those countries who have traveled to Iran, Iraq, Syria, and Sudan in the past five years must obtain visas to enter the United States.
Iran has said its inclusion on the list is intended to undermine the nuclear deal, known as the JCPOA.
In comments quoted by Iranian media on December 23, Zarif said he had raised the issue with U.S. Secretary of State John Kerry at their meeting in New York this month and also in several e-mails in the last 10 days, hoping that "these measures stop any obstacle in implementation of the JCPOA."