Sen. Elizabeth Warren, D-Mass., has triggered a Government Accountability Office investigation into the Trump administration's decision to transfer student loan services to the Department of the Treasury.

The investigation comes as Warren has raised concerns about changes to federal student loan oversight and administration during the previous administration. The Massachusetts senator's request to the GAO represents the latest in her ongoing scrutiny of federal student loan policies and their implementation.

Warren has previously criticized what she characterizes as inaction by federal agencies responsible for consumer financial protection during the Trump years. Her calls for investigation reflect broader Democratic concerns about changes to federal oversight of student lending and borrower protections.

The GAO, which serves as Congress's investigative arm, will examine the circumstances and rationale behind the transfer of student loan responsibilities to Treasury. The investigation could provide insights into how the administrative changes affected loan servicing and borrower assistance programs.

Student loan administration has been a contentious policy area, with lawmakers from both parties expressing concerns about loan servicing quality and borrower outcomes. The investigation may shed light on whether the organizational changes improved or hindered federal student loan operations.