[Excerpt] "Last month, President Trump issued an executive order that has become known as the "travel ban." Among other things, the ban sought to temporarily exclude from the United States foreign nationals from seven predominantly Muslim countries. Almost immediately, a number of plaintiffs sued and succeeded in obtaining "stays" preventing the ban from going into effect until the cases can be tried. Courts granted these stays because they found that the ban was likely to violate, among other things, anti-discrimination principles embedded within the First and Fifth Amendments to the United States Constitution.
John M. Greabe, Do Foreign Nationals Really Have Constitutional Rights?, Concord Monitor, Feb. 26, 2017 at D1, D3.