Trump's most recent order blocks people with green cards who were abroad when the order was signed from re-entering the US. Green card holders are permanent residents---that was the promise we made when they were given their green cards. Darcy James Argue helpfully provides a picture below of the of the brochure you get welcoming you.
Pro-Publica reports that there are 500,000 permanent residents from the countries that are now banned all of these people have effectively had our promise to them broken. http://tinyurl.com/jqlmkcv.
Colleges and Universities are already recommending that students and faculty from the effected countries cancel plans to travel abroad because they may not be able to return home. A Yale Ph.D. student from Iran has already been stranded. (Chronicle of Higher Ed: http://tinyurl.com/j3at4nv, via Meanwhile in higher ed)
Protests are launching!
Cleveland peeps: Emergency Rally and March for Refugees and Sanctuary. Monday January 30, 12:30 pm - 1:30 pm Market Square, West 25th St. and Lorain Ave. (http://tinyurl.com/hrq3s99)
New York! Today 6PM protest at JFK to support the folks who are now stranded at the airport because of Trump's order: https://www.facebook.com/events/623562661169807/
Finally, Mike Malz of Same Facts has advice for government workers who are ordered to do unethical things. Rachel Ann McKinney suggests academics need similar plans. http://tinyurl.com/zb4886x