MOBILE, Ala. (NBC 15) — Leo Garcia Venegas left Mobile's Federal Courthouse Wednesday still unsure of what would happen next.The attorneys for the Spanish speaking Baldwin County construction worker had just taken his case before a federal judge, a class-action lawsuit that is also asking for an injunction to keep ICE agents and the Department of Homeland Security away from his workplace.So far, he's been detained by agents three different times... once outside on a construction site, once while working inside a home under construction and a third time while driving home.He fears there will be a next time."Of course, yes," says Venegas, through an interpreter. "I'm still fearful that could happen again."Venegas is a U.S. Citizen and has ID to prove it, but his attorneys say that's not been enough to keep him from tackled, handcuffed and detained before being released... encounters Venegas has partially caught on camera."We're looking to stop harm that's happening to Leo before the officers have any idea who Leo is, " says his attorney, Jared McClain, who is with the organization Institute for Justice. "And in order to do that, you necessarily have to protect a broader group of people."His lawsuit seeks to stop DHS officers from entering private property without warrants, to stop detaining workers based only on how they look, and to immediately let workers go as soon as they show evidence of citizenship or legal presence.Wednesday, attorneys from the Institute for Justice argued those points, each one of them challenged by attorneys for the Department of Justice... leading to a hodgepodge of issues, not the least of whether an open work site is private property, which would usually require a warrant. The government says. in this case, it's not."What they're saying," says McClain, is regardless of whether or not this illegal, regardless of whether we're entering private sites without a warrant, nobody can stop us. I think what we heard is only the owner, only DR Horton can come into court to stop these raids."As is customary, the U.S. Attorneys told NBC 15 News it would not be commenting on a case underway.But Venegas' attorneys are under no such guidelines, calling into question the government's position during the hearing that Alabama's new Real ID's can be counted on to be. well, real. A special agent from Homeland Security testified he is uncertain about the ID program, which was initiated by his own agency.That drew fire from Venegas' attorney."The government has required a nationwide standard for driver's license in order to be recognized by the federal government," says McClain, "and here the federal government is standing up in court saying actually we don't trust these IDs that we've certified."Chief US District Judge Jeffry Beaverstock plans to take about w week to rule of the protective injunction as the lawsuit waits to move forward.Venegas says he's left feeling insecure about what happens next."In the future," he says, "it could not just happen to me, it could happen to other people."