Several Democratic presidential hopefuls have said they plan to visit a facility in Homestead, Fla., where migrant children are being held as the 2020 candidates prepare for the first primary debates in Miami this week.

Their visits to the facility come amid renewed scrutiny over the treatment of migrant children in the custody of the U.S. government after attorneys told The Associated Press about filthy, dangerous conditions in which children were being held at a border facility in Clint, Texas.

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As of June 16, some 2,450 unaccompanied migrant children between the ages of 13 and 17 were being held at the Homestead facility, according to a Department of Health and Human Services (HHS)

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Democratic candidates including Sen. Elizabeth Warren Elizabeth WarrenHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Democratic senators ask inspector general to investigate IRS use of location tracking service MORE (Mass.), Sen. Amy Klobuchar Amy Klobuchar3 reasons why Biden is misreading the politics of court packing Social media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight MORE (Minn.), Rep. Eric Swalwell Eric Michael SwalwellSwalwell calls for creation of presidential crimes commission to investigate Trump when he leaves office 'This already exists': Democrats seize on potential Trump executive order on preexisting conditions Swalwell: Barr has taken Michael Cohen's job as Trump's fixer MORE (Calif.) and author Marianne Williamson Marianne WilliamsonMarianne Williamson discusses speaking at People's Party Convention Fewer people watched opening night of Democratic convention compared to 2016 Marianne Williamson: Democratic convention 'like binge watching a Marriott commercial' MORE said they would visit the facility this week.

Warren and Klobuchar are appearing in the presidential debate Wednesday night, while Swalwell and Williamson are in Thursday night's event.

Warren said she saw children being marched "like little soldiers" in single file with guards when she went to the migrant shelter on Wednesday.

“There weren’t children playing. There weren’t children laughing the way children usually do when they’re moving from one place to another. There were children who were being marched like little soldiers, like little prisoners,” she said.

Here’s Elizabeth Warren on what she saw from outside Homestead today — she requested a visit but was not allowed in. pic.twitter.com/rZSa8C4skH — maxwell (@maxwellstrachan) June 26, 2019

Spokesmen for Sen. Kamala Harris Kamala HarrisHundreds of lawyers from nation's oldest African American sorority join effort to fight voter suppression Biden picks up endorsement from progressive climate group 350 Action 3 reasons why Biden is misreading the politics of court packing MORE (D-Calif.) and South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE — who both are set to appear in the debate Thursday night — told The Hill in statements that they will also visit the facility on Friday morning.

The Hill has reached out for comment to HHS’s Administration for Children and Families.

Tetiana Anderson, a spokeswoman for Caliburn International, which operates the Homestead center, told The Hill in a statement that visitors to the facility are welcome, but they first have to register with the HHS Office of Refugee Resettlement (ORR), which can take up to 14 days.

"The Homestead facility is fully transparent, allowing visitations from religious groups, congressional delegations, local government groups, consular officials and the media that have secured HHS ORR prior approval," Anderson said.

A group of House Democrats visited the facility in February and called it “chilling.”

Twenty of the more than two dozen candidates vying for the 2020 Democratic presidential nomination will face off in the debates on Wednesday and Thursday nights.

— Updated at 3:28 p.m.