The State Department says the measure is intended to ensure the government does not incur costs if a visitor violates visa terms.

The Trump administration is moving towards tightening entry restrictions, with a new measure that could make it more burdensome for citizens of certain countries to obtain a visa.View on euronews

The rules for the popular Diversity Visa Lottery - which allows thousands of people each year to legally immigrate to the United States and apply for a green card - could soon change under a new proposal from the U.S. Department of State.