1/28/17 at about 8:45 EST: Per Dale Hoe, Director, ACLU Voting Rights Project

updated to add: from The New Civi Rights Movement
A federal judge in New York on Saturday evening issued a nationwide order blocking the deportation of people detained in the U.S. under President Donald Trump’s immigration and refugee ban.
U.S. District Judge Ann Donnelly, an Obama nominee who took the bench in 2015, issued the ruling in response to a lawsuit brought by the ACLU, the National Immigration Law Center and other groups on behalf of two Iraqi men detained at JFK Airport earlier Saturday.
Both men had U.S. Visas and were in the air when Trump signed the order Friday, which blocked people from seven Muslim-majority countries from entering the country for 90 days. The order also halted the U.S. refugee program for 120 days, and indefinitely suspended the intake of refugees from Syria.
Initial reports on Twitter indicated that the judge’s order applies only to those who were either in transit or had already been detained. That means it won’t necessarily prevent the Trump administration from implementing the ban going forward.
So, it looks like it only includes those who are currently detained or are in the process of traveling to the US.