The Obama Administration put these (7 countries) first and foremost so that these countries need to have further travel restrictions based on the intelligence on them, what the president did was take the first step through this executive order of securing the United States of America.
Justice Dept. will not defend executive order on travel restrictions
The acting Attorney General Sally Yates has told Justice Department lawyers not to make legal arguments defending President Donald Trump's executive order on immigration and refugees, according to sources familiar with the order. Yates, an Obama appointee who is serving until Trump attorney general nominee Jeff Sessions is confirmed, does not believe the substance of the order is lawful, according to the sources. "My responsibility is to ensure that the position of the Department of Justice is not only legally defensible, but is informed by our best view of what the law is after consideration of all the ... (full story)