Donald Trump has made the deportation of illegal immigrants a major piece of his campaign platform. But a new report from Mother Jones claims the GOP nominee's modeling agency has frequently, illegally employed immigrants in the United States.

Three former models formerly employed by Trump Model Management in the mid-2000s have come forward, claiming they came to the U.S. on a tourist visa and began working before they were approved for a work visa, which is illegal.

Former model Melania Trump through the years

28 PHOTOS Melania Trump See Gallery Melania Trump Donald Trump's new bride, Slovenian model Melania Knauss, waves as they leave the Bethesda-by-the-Sea Episcopal Church after their wedding in Palm Beach, Florida, January 22, 2005. REUTERS/Gary I Rothstein Real estate magnate Donald Trump and his girlfriend Melania Knauss arrive at the Metropolitan Club in New York where Hollinger International was holding its annual meeting on May 22, 2003. Hollinger publishes newspapers The Chicago Sun-Times, The Daily Telegraph of London, and the Jerusalem Post. REUTERS/Peter Morgan PM/ME Donald Trump and his girlfriend Melania Knauss arrive at the Vanity Fair Oscar party at Morton's restaurant in West Hollywood, California, February 29, 2004. REUTERS/Ethan Miller REUTERS EM/AS Melania Knauss at the Lincoln Center's Avery Fisher Hall in New York City, New York (Photo by Ron Galella/WireImage) NEW YORK - NOVEMBER 14: Model Melania Knauss arrives for the Victoria's Secret Fashion Show November 14, 2002 in New York City. (Photo by Lawrence Lucier/Getty Images) 386900 78: Business tycoon Donald Trump with his girlfriend, model Melania Knauss arrive for the 73rd Annual Academy Awards March 25, 2001 at the Shrine Auditorium in Los Angeles. (Photo by David McNew/Getty Images) Donald Trump and Melania Knauss during The 36th Annual New York Film Festival - 'Celebrity' Opening Night at Avery Fisher Hall/Lincoln Center in New York City, New York, United States. (Photo by Ron Galella/WireImage) Trump's girlfriend, model Melania Knauss at the world premiere of 'I Dreamed Of Africa' at Sony Theatres Lincoln Square in New York City. 4/18/00 Photo by Evan Agostini/ImageDirect Melania Knauss and Donald Trump during 2002 VH1 Vogue Fashion Awards - Arrivals at Radio City Music Hall in New York City, New York, United States. (Photo by James Devaney/WireImage) NEW YORK - SEPTEMBER 17: Melania Knauss attends the private party hosted by Donald Trump's T Management for legendary supermodel Pat Cleveland at Ian Schrager's Hudson Sky Terrace September 17, 2003 in New York. (Photo By Steven Henry/Getty Images) Melania Knauss during 'The Apprentice' Finale Party at Trump Tower in New York City, New York, United States. (Photo by Robin Platzer/FilmMagic) Melania Knauss during 'Trump World' Magazine Launch Party at Trump World Tower in New York, New York, United States. (Photo by J. Countess/WireImage) NEW YORK - APRIL 6: Gala vice-chair Melania Trump, wife of Donald Trump, arrives at the Martha Graham Dance Company opening night gala at New York City Center on April 6, 2005 in New York City. (Photo by Evan Agostini/Getty Images) Melania Trump during Donald Trump Hosts the Opening Night Reception of 'Veranda: New York's Best at Trump Park Avenue, The Ultimate Showcase Penthouse' at Trump Park Avenue in New York City, New York, United States. (Photo by Desiree Navarro/FilmMagic) NEW YORK - APRIL 20: Melania Trump arrives at the Breast Cancer Research Foundation's Annual Hot Pink Party at the Waldorf-Astoria on April 20, 2005 in New York. (Photo by Brad Barket/Getty Images) Donald Trump and Melania Trump during 'Sweet Charity' Broadway Opening Night - Arrivals at The Al Hirshfeld Theater in New York City, New York, United States. (Photo by Bruce Glikas/FilmMagic) Melania Trump (Photo by Jason Kempin/FilmMagic) Donald Trump and Melania Trump (Photo by Steve Granitz/WireImage) NEW YORK - MAY 07: Melania Trump attends the Metropolitan Museum of Art Costume Institute Benefit Gala 'Poiret: King Of Fashion' at the Metropolitan Museum of Art on May 7, 2007 in New York City. (Photo by Peter Kramer/Getty Images) NEW YORK - MAY 04: Melania Trump attends 'The Model as Muse: Embodying Fashion' Costume Institute Gala at The Metropolitan Museum of Art on May 4, 2009 in New York City. (Photo by Stephen Lovekin/Getty Images) NEW YORK - JUNE 25: Melania Trump attends the Police Athletic League's 37th annual Superstar dinner at The Pierre Hotel on June 25, 2009 in New York City. (Photo by Joe Kohen/Getty Images) NEW YORK - MAY 24: Melania Trump attends the premiere of 'Sex and the City 2' at Radio City Music Hall on May 24, 2010 in New York City. (Photo by Charles Eshelman/FilmMagic) LOS ANGELES, CA - FEBRUARY 25: Melania Trump arrives at QVC Red Carpet Style Party on February 25, 2011 in Los Angeles, California. (Photo by Valerie Macon/Getty Images) PHILADELPHIA, PA - DECEMBER 13: Melania Trump attends the Philadelphia Style Magazine holiday issue release party at 10 Arts Lounge at The Ritz-Carlton on December 13, 2011 in Philadelphia, Pennsylvania. (Photo by Gilbert Carrasquillo/Getty Images) NEW YORK, NY - MAY 07: Melania Trump attends the 'Schiaparelli And Prada: Impossible Conversations' Costume Institute Gala at the Metropolitan Museum of Art on May 7, 2012 in New York City. (Photo by Larry Busacca/Getty Images) NEW YORK, NY - MAY 03: (L-R) Donald Trump and Melania Trump attend the Operation Smile 10th Anniversary event on May 3, 2012 in New York City. (Photo by Daniel Zuchnik/FilmMagic) NEW YORK, NY - MAY 20: Melania Trump attends the 'Celebrity Apprentice' Live Finale at American Museum of Natural History on May 20, 2012 in New York City. (Photo by Jim Spellman/WireImage) NEW YORK, NY - JULY 16: Donald Trump and Melania Trump attend 'The Dark Knight Rises' premiere at AMC Lincoln Square Theater on July 16, 2012 in New York City. (Photo by Jamie McCarthy/WireImage) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

They also claim the agency encouraged them to lie on customs forms about the nature of their stay in the country. According to one former model, she was told, "If they ask you any questions, you're just here for meetings."

The models detailed other alleged exploitative practices, including being forced to live with up to 11 other women in a two-bedroom apartment while being charged exorbitant rent.

Rachel Blais, another one of Trump's former models, compared working for the agency with modern day slavery, saying, "They are the most crooked agency I've ever worked for, and I've worked for quite a few."

The company has not responded to the multiple requests for comment from Mother Jones.

RELATED: Top cities immigrants are moving to

10 PHOTOS Cities immigrants are moving to (BI) See Gallery Cities immigrants are moving to (BI) Miami/Fort Lauderdale/West Palm Beach, Florida Net international migration: 335,637 2014 population: 5,937,100 Percent change: 5.7 Ithaca, New York Net international migration: XX 2014 population: XX Percent change: 5.6 San Jose/Sunnyvale/Santa Clara, California Net international migration: 92,657 2014 population: 1,954,348 Percent change: 4.7 Manhattan, Kansas Net international migration: 4,187 2014 population: 97,524 Percent change: 4.3 Ames, Iowa Net international migration: 4,072 2014 population: 95,456 Percent change: 4.3 Jacksonville, North Carolina Net international migration: 7,840 2014 population: 185,267 Percent change: 4.2 Urbana-Champaign, Illinois Net international migration: 9,997 2014 population: 237,579 Percent change: 4.2 Lafayette, Indiana Net international migration: 8,238 2014 population: 212,271 Percent change: 3.9 New York City/Newark/Jersey City, New York and New Jersey Net international migration: 773,841 2014 population: 20,095,119 Percent change: 2.9 Honolulu, Hawaii Net international migration: 36,923 2014 population: 992,082 Percent change: 3.7 Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

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