United States made changes to its Visa Waiver program back in December (red more here) that allows developed nation citizens (mainly Europeans) to enter the country without having to apply for a visa.
Visa waiver country nationals that had traveled to Syria, Iraq, Iran and Sudan in the past five years were excluded from the program in December. Now the list of countries have been extended to include also Libya, Somalia and Yemen.
You can access New York Times piece about this change here of which below is and excerpt:
The Department of Homeland Security on Thursday added three countries to a growing list that would prohibit people who have visited those nations in the past five years from entering the United States without a visa.
The new countries are Libya, Somalia and Yemen. The department indicated that other nations could be added.
The Obama administration previously announced changes to the visa-waiver program that would make it harder for travelers to enter the United States from Europe if they had dual citizenship from Iran, Iraq, Sudan or Syria, or had visited one of those countries in the last five years. The restrictions announced on Thursday would not apply to those with dual citizenship in Libya, Somalia or Yemen, the agency said.
Wouldn’t surprise me if this list would just keep expanding to all countries with whom the United States has problems or disagreements with.