“Citizens and eligible nationals of participating Visa Waiver Program countries may apply for admission to the United States at U.S. ports of entry as nonimmigrant aliens for a period of ninety days or less for business or pleasure without first obtaining a nonimmigrant visa, provided that they are otherwise eligible for admission under applicable statutory and regulatory requirements. On March 4, 2010, the Secretary of Homeland Security, in consultation with the Secretary of State, designated Greece as a country that is eligible to participate in the Visa Waiver Program. Accordingly, this rule updates the list of countries authorized to participate in the Visa Waiver Program by adding Greece. DATES: This final rule is effective on April 5, 2010.” Federal Register / Vol. 75, No. 61 / Wednesday, March 31, 2010.