Democrats are warning the administration to tread carefully in its treatment of the immigrants without legal status who are alleging workplace abuses at President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE’s golf courses.

The former employees who have come forward recently toured Democratic offices on Capitol Hill, received calls of support and even invitations to next week's State of the Union address.

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That, in turn, has drawn attention to their illegal status in the United States, raising concerns of possible deportation.

"All of them, I consider, are material witnesses to a federal crime. And any attempt to remove them from the U.S. could possibly be obstruction of justice," said Anibal Romero, the attorney for 20 of the former golf course workers.

The Department of Homeland Security declined to comment on any deportation plans.

Romero is seeking help from congressional Democrats, as well as federal authorities in New York and New Jersey, to investigate the Trump Organization, which he calls "a criminal enterprise."

His clients previously worked at Trump’s golf clubs in Westchester, N.Y., and Bedminster, N.J.

Margarita Cruz, Sandra Díaz, Victorina Morales and Gabriel Sedano — workers who say they were employed by the Trump Organization while they did not have legal status — talked to Democratic lawmakers in Capitol Hill offices this week, asking for their support in a possible investigation.

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Rep. Raúl Grijalva (Ariz.), an outspoken supporter of immigrant rights, said he would circulate a letter of support among colleagues.

"The first thing is to the FBI, to say, 'Hey man, you have to investigate … this is a violation of law — civil or criminal,’” Grijalva said. “And the second that we shouldn't forget is that Homeland Security mustn't move these people because they are material witnesses and potentially victims as well."

Reps. Bonnie Watson Coleman Bonnie Watson ColemanDemocrats smell blood with new DHS whistleblower complaint New Jersey incumbents steamroll progressive challengers in primaries New Jersey Rep. Bonnie Watson Coleman wins Democratic primary MORE (N.J.) and Jimmy Gomez Jimmy GomezDemocrats call for IRS to review tax-exempt status of NRA Trump says no Post Office funding means Democrats 'can't have universal mail-in voting' Hispanic Caucus asks for Department of Labor meeting on COVID in meatpacking plants MORE (Calif.) invited Morales and Díaz, respectively, as their guests for Trump’s State of the Union address on Feb. 5.

The four workers also met with Reps. Steven Horsford Steven Alexander HorsfordThe robbing of a wildlife refuge in Nevada Rep. Steven Horsford wins Democratic House primary in Nevada Overnight Defense: Army now willing to rename bases named after Confederates | Dems demand answers on 'unfathomable' nuke testing discussions | Pentagon confirms death of north African al Qaeda leader MORE (Nev.), Joe Kennedy Joseph (Joe) Patrick KennedyDemocrats see fundraising spike following Ginsburg death Massachusetts town clerk resigns after delays to primary vote count Bogeymen of the far left deserve a place in any Biden administration MORE III (Mass.) and Tom Malinowski Thomas (Tom) MalinowskiDCCC reserves new ad buys in competitive districts, adds new members to 'Red to Blue' program The Hill's Morning Report - Presented by Facebook - First lady casts Trump as fighter for the 'forgotten' Hillicon Valley: Lawmakers introduce resolution condemning QAnon | US Cyber Command leader vows to 'defend forward' in protecting nation from cyberattacks MORE (N.J.) and Sens. Bob Menendez Robert (Bob) MenendezKasie Hunt to host lead-in show for MSNBC's 'Morning Joe' Senators ask for removal of tariffs on EU food, wine, spirits: report VOA visa decision could hobble Venezuela coverage MORE (N.J.) and Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (N.J.).

Staff members for Senate Minority Leader Charles Schumer Chuck SchumerJacobin editor: Primarying Schumer would force him to fight Trump's SCOTUS nominee CNN's Toobin: Democrats are 'wimps' who won't 'have the guts' to add Supreme Court seats Republican senator says plans to confirm justice before election 'completely consistent with the precedent' MORE (D-N.Y.), Sen. Sherrod Brown Sherrod Campbell BrownBipartisan praise pours in after Ginsburg's death Emboldened Democrats haggle over 2021 agenda Hillicon Valley: Russia 'amplifying' concerns around mail-in voting to undermine election | Facebook and Twitter take steps to limit Trump remarks on voting | Facebook to block political ads ahead of election MORE (D-Ohio) and Rep. Vicente Gonzalez (D-Texas) also met with the group.

The lawmakers praised their willingness to come forward, risking deportation.

"When I told my supervisor that I didn’t have papers, he told me not to worry," said Morales, adding that her supervisor took her photo in a laundry room on Trump property and then lent her $175 to obtain fraudulent documents.

"His cousin, another employee, drove me to get the papers," she added.

The Trump Organization did not respond to a request for comment on this story.

Eric Trump Eric Frederick TrumpMelania Trump: Ginsburg's 'spirit will live on in all she has inspired' Bipartisan praise pours in after Ginsburg's death Eric Trump says he will comply with New York AG's subpoena only after Election Day MORE, one of the president's two sons running day-to-day operations for the Trump Organization, said in a Washington Post article this week that the ability of workers who immigrated illegally to gain employment at his father's companies is evidence that the immigration system is broken.

"We are making a broad effort to identify any employee who has given false and fraudulent documents to unlawfully gain employment,” he said. “Where identified, any individual will be terminated immediately.”

But Morales's story, along with many others, points to a pattern of company-sponsored falsification of documents to benefit from cheap labor, according to Romero.

He said another worker, who has not come forward to the media, expressed fear that the Secret Service would discover his immigration status after Trump was elected in 2016.

After the worker raised the issue with a supervisor, the supervisor allegedly scrubbed certain workers' names from a list provided to the Secret Service for security sweeps.

The Secret Service declined to comment for this story.

The workers who met with Democratic lawmakers say the assistance in obtaining false documents often came with a price: verbal and physical abuse, and withdrawal of work benefits.

"During my five years working there, I was a trusted employee," said Morales. "I cleaned the homes of Donald and Melania Trump Melania TrumpMelania Trump: Ginsburg's 'spirit will live on in all she has inspired' The Hill's 12:30 Report - Presented by Facebook - You might want to download TikTok now Warning label added to Trump tweet over potential mail-in voting disinformation MORE, but I was not offered health care, a 401(k) or other benefits that my documented co-workers received. How can they say they didn’t know we were undocumented?”

Romero said Morales's experience is far from unique.

"I have spoken with over 30 former employees, and they all tell a similar story: supervisors who provided them or encouraged them to procure false documents; threatened them with deportation; physically abused them; and coerced them into unfavorable jobs and situations," said Romero.

Many of the workers risk deportation for coming forward. Díaz is now a legal permanent resident.

Democrats vowed to keep up the pressure on a possible investigation into the allegations, and warned against any effort to deport them.

"Any move on them — automatically they have a strong case,” Grijalva said.