Sen. Dianne Feinstein Dianne Emiel FeinsteinFeinstein 'surprised and taken aback' by suggestion she's not up for Supreme Court fight Democrats shoot down talk of expanding Supreme Court Biden leads Trump by 12 points among Catholic voters: poll MORE (D-Calif.), the top Democrat on the Senate Judiciary Committee, is requesting the panel hold a hearing on the Trump administration's handling of immigrant families detained along the U.S.-Mexico border.

Feinstein sent a letter to Sen. Chuck Grassley Charles (Chuck) Ernest GrassleyThe Hill's 12:30 Report: Ginsburg lies in repose Top GOP senators say Hunter Biden's work 'cast a shadow' over Obama Ukraine policy Read: Senate GOP's controversial Biden report MORE (R-Iowa), the chairman of the committee, requesting a public hearing to dig into the separation of children from their parents, the administration's "zero tolerance" policy and the lack of a public plan to reunite families who have been separated.

"Congress has a constitutional obligation to exercise its oversight authority. The Senate Judiciary Committee deserves an opportunity to examine these policies and their impacts on families, children, and the budget. We cannot resolve the crises in our hemisphere by draconian policies that further inflict trauma on children," Feinstein wrote in the letter to Grassley.

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Democrats have seized on Trump's immigration policies, which resulted in the separation of thousands of children from their parents when they were detained along the U.S.-Mexico border.

Though Trump signed an executive order last week to pave the way for the families to be kept together, there have been contradicting statements on how the policy is being implemented and some lawmakers believe they still need to pass legislation.

Feinstein added that the executive order created "new challenges" and that the administration does not appear to have developed a plan to "identify, track and reunite" families that have already been separated.

"Americans were rightly shocked to hear the cries of babies calling out for their mothers and fathers and I am deeply concerned about the harm this has had on children and families. I also am concerned the Administration has not implemented a comprehensive strategy to reunite the families and instead continues these arbitrary separations," Feinstein wrote.

Feinstein's letter comes as she is set to meet on Monday with Sens. Dick Durbin Richard (Dick) Joseph DurbinFeinstein 'surprised and taken aback' by suggestion she's not up for Supreme Court fight Grand jury charges no officers in Breonna Taylor death Democrats shoot down talk of expanding Supreme Court MORE (D-Ill.), Thom Tillis Thomas (Thom) Roland TillisThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting OVERNIGHT ENERGY: EPA head questions connection of climate change to natural disasters | Pebble Mine executives eye future expansion in recorded conversations | EPA questions science linking widely used pesticide to brain damage in children Liberal super PAC launches ads targeting vulnerable GOP senators over SCOTUS fight MORE (R-N.C.) and Ted Cruz Rafael (Ted) Edward CruzCruz blocks amended resolution honoring Ginsburg over language about her dying wish Trump argues full Supreme Court needed to settle potential election disputes Press: Notorious RBG vs Notorious GOP MORE (R-Texas) as they try to hash out an agreement on narrow legislation to address families detained along the border.

Democrats have previously requested a hearing on Trump's "zero tolerance" policy but Grassley appeared to shoot down that request with a letter to Feinstein and other Democrats on the committee last week.

"The simplest and easiest way to address this crisis is to repeal the Flores decision so that family units can remain in family residential centers and receive adequate care pending the outcome of their criminal or civil cases. This is an easy, common-sense solution that doesn’t require a hearing," Grassley wrote.