"While we welcome this victory, it cannot distract from the urgency and need for robust legislative reform that provides permanent solutions for all Temporary Protected Status holders," said José Palma, spokesperson for the National TPS Alliance.
A U.S. District Court judge questioned whether President Donald Trump's "America First" slogan was code for discriminatory immigration policies.
The end of protections could see hundreds of thousands of people faced with deportation to the countries they were forced to flee.
The Trump administration and Daniel Ortega blame each other for Nicaragua's unrest, but ICE and Managua are quietly working together to expedite the deportation of Nicaraguans to their country of origin.
The Trump administration has ended protections for roughly 300,000 Central American and Haitian immigrants.
There are some 620,000 undocumented black immigrants in the United States, but advocates say their experiences sit at the periphery of discussions surrounding immigration policy.
President Donald Trump's "shithole countries" comment during last month's immigration meetings with Congressmembers plays a key role in the lawsuit.
The Trump administration said this week that it's too dangerous for Americans to travel to El Salvador — even as it announced plans to deport more than a quarter-of-a-million Salvadoran refugees back there next year.
Tens of thousands of Haitians live in the U.S. under Temporary Protected Status.