An Alabama construction worker and US citizen who says he was detained twice by immigration agents within just a few weeks has filed a lawsuit in federal court demanding an end to Trump administration workplace raids targeting industries with large immigrant workforces.The class-action lawsuit, filed on Tuesday by Leo Garcia Venegas, a concrete worker, demands an end to what the firm calls “unconstitutional and illegal immigration enforcement tactics”.Venegas, who was born in the US, lives and works in Baldwin county, Alabama, a Gulf coast area between the cities of Mobile and Pensacola, Florida, that has seen immense population growth in the last 15 years, and which offers plenty of construction work.The lawsuit, filed with the public interest law firm Institute for Justice, comes just weeks after the supreme court lifted a judge’s restraining order that had barred immigration agents in Los Angeles from stopping people solely based on their race, language, job or location.The court has repeatedly allowed some of the Trump administrations harshest immigration policies, while also leaving open that legal outcomes could shift as cases play out.The Department of Homeland Security dismissed the suit as “race-baiting opportunism”.“DHS law enforcement uses ‘reasonable suspicion’ to make arrests,” assistant secretary Tricia McLaughlin said in a statement. “What makes someone a target for immigration enforcement is if they are illegally in the US – NOT their skin color, race, or ethnicity.”McLaughlin did not address why Venegas was detained twice even though he’s a US citizen.The new lawsuit describes repeated raids on workplaces despite agents having no warrants nor suspicion that specific workers were in the US illegally, and a string of US citizens – many with Latino-sounding names – who were detained.The Department of Homeland Security “authorizes these armed raids based on the general assumption that certain groups of people in the industry, including Latinos, are likely illegal immigrants”, the suit argues.In a May raid that swept up Venegas, video shot by a co-worker shows him being forced to the ground by immigration agents as he repeatedly insisted he was a US citizen. The lawsuit says the agents targeted workers at the building site who looked Latino, while leaving alone the other workers.