Maryland gubernatorial candidate Ben Jealous, a former NAACP president, and Rep. Luis V. Gutiérrez (D-Ill.) were among 27 arrested at an immigration protest near the White House on Tuesday, authorities said.

At least 80 people joined a march defending the 2012 Deferred Action for Childhood Arrivals program, which granted deportation reprieves to hundreds of thousands of undocumented immigrants, often called “dreamers,” who came to the United States as children. The fate of the program under President Trump, who has criticized it, is unclear.

Twenty-seven of the protesters were arrested, according to a spokeswoman for the U.S. Park Police.

Jealous, who announced his bid for the Democratic gubernatorial nomination in May, was the first protester arrested, according to Yanet Amanuel, a recent University of Maryland graduate who was there. Amanuel said Jealous and the others were detained after they refused to move from a sidewalk.

“Ben has been a supporter of dreamers in particular and ensuring that they are able to prosper and access the same rights as any other American, particularly in situations where America is the only home they’ve ever had,” said Kevin Harris, a spokesman for Jealous.

Around 4 p.m., Gutiérrez’s office tweeted that he was “still in US Park Police custody after being arrested.”