Congressional lawmakers are holding an inquiry into the Trump administration’s decision to stop considering requests from immigrants seeking to remain in the country for medial treatment and other hardships.

A subcommittee of the House Oversight and Reform Committee has called an emergency hearing Wednesday, Sept. 11, on the Aug. 7 decision.

Immigration officials and medical and legal experts are scheduled to testify, including those from Massachusetts where civil rights groups filed a lawsuit last week to challenge the move in federal court.

Under the medical deferred action program, foreign nationals are allowed to work legally and receive health benefits while their family members receive treatment for serious medical issues.

The U.S. Citizenship and Immigration Services has said it receives around 1,000 deferral requests citing medical reasons or other hardships each year.

The Aug. 7 decision is part of the Trump administration’s efforts to eliminate loopholes in immigration policies and deflate spending on health care.

According to the Forbes, the health care program for unauthorized immigrants costs $18.5 billion a year, of which federal taxpayers provided $11.2 billion in subsidized care to unauthorized immigrants in 2016.

Includes reporting from the Associated Press