U.S. civil rights groups warn that President Donald Trump's executive order lays the groundwork for reinstating a ban on travelers from predominantly Muslim or Arab countries. The order grants wider latitude to deny visa requests and remove individuals who have already entered the country. The National Iranian-Americans Council (NIAC) says the order will separate families and lower enrollment at U.S. universities. Trump's new order sets a 60-day window for officials to identify countries with deficient vetting processes and adds language that denies visas or entry to those who bear hostile attitudes towards the U.S.