With an estimated 2,300 children still in U.S. government detention facilities after being separated from their families by the Trump administration, Sen. Elizabeth Warren (D-Mass.) spearheaded a letter signed by Senate Democrats and sent to federal agencies on Monday demanding answers about the fate of those children and what the plan is for ending their incarceration and reuniting them with their loved ones.

“The Trump Administration ripped over 2,300 kids from their parents and scattered them across the country,” Warren wrote in an email to the Huffington Post. “This administration owes us clear answers on how they will reunite the families they tore apart.”

In the letter, the lawmakers said they are “deeply concerned by reports of chaotic attempts to reunify parents and children” and demanded both answers and action from the agencies are the heart of the administration’s cruel “zero tolerance” border policy.

According to the post:

Last week, a federal judge ordered the Trump administration to end its family separation policy and reunite children with their families, family members, or custodians within 30 days. According to Warren, however, too little has been done to end the needless suffering of children and their families.

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“This is an urgent matter. Hundreds of children are separated from their families, suffering untold distress,” Warren declared. She added, “The ‘zero-tolerance’ policy that tore these families apart was implemented with no plan whatsoever for how to bring them back together again.”

After hundreds of thousands of Americans rallied on Satuday to condemn the Trump administration’s policy in cities nationwide, Warren issued this tweet on Monday after visiting detention facilities last week:

Anecdotally, the stories of separated families continue to create heartbreak nationwide:

Late Sunday, the New York Times reported on how families and sponsors trying to get children out of government detention continue to face financially burdensome fees and red tape that are thwarting and delaying their efforts.

“The government is creating impossible barriers and penalizing poverty,” Neha Desai, director of immigration at the National Center for Youth Law in Oakland, told the Times.

On Monday afternoon, immigrant rights groups and child safety advocates pushed the #Reunitethe2300 hashtag on social media as a way to keep up the political pressure: