The article clarifies that both legal and illegal immigrants may be targeted, including legal immigrants where there is a "suspicion" of illegal activity.  If I were a Muslim or non-white immigrant in the US, I wouldn't feel confident that I would not face unfair treatment, trumped up charges, and an uncaring bureaucracy modelled after uncaring Trump and his white supremacist advisor, Bannon.

Sad mentality for the US, dividing and attacking citizens, in the name of appealing to racist partisans.

It is likely they will lose as much as they will gain, at enormous cost, and with major declines in foreign travel to the US, including of highly desirable and educated students and workers.