Sec. 2. Temporary Suspension of Entry for Nationals of Countries of Particular Concern During Review Period. (a) The Secretary of Homeland Security, in consultation with the Secretary of State and the Director of National Intelligence, shall conduct a worldwide review to identify whether, and if so what, additional information will be needed from each foreign country to adjudicate an application by a national of that country for a visa, admission, or other benefit under the INA (adjudications) in order to determine that the individual is not a security or public-safety threat. The Secretary of Homeland Security may conclude that certain information is needed from particular countries even if it is not needed from every country.
Ask yourself what country Salmen Abedi is a national of.
Keep in mind that term has a legal meaning and definition irrespective of how you might want to define it.