Lawmakers sent a letter to the agency’s acting commissioner asking to keep open field offices and demanding transparency about potential closures.

The Social Security Administration estimated its recent staff cuts and reorganization have added up to savings of more than $1 billion, but several Democratic U.S. senators have asked for transparency on the administration’s future plans for the agency and a watchdog review on whether these cuts have hurt customer service and the delivery of benefits.

The president's anti-immigration efforts could remove a significant source of income for the trust fund that pays for benefits.