The program is now limited to veterans who served after the Sept. 11, 2001 attacks. VA says expansion to all veterans would make it more equitable, but that without extra funding, basic health care benefits to veterans would be jeopardized.
Congress created the program in 2010, giving caregivers of seriously wounded veterans a stipend, health care and at least 30 days of respite care each year.
Lawmakers told the VA to study the feasibility of the expansion after some veterans groups raised questions about fairness.
The study, distributed to lawmakers Wednesday, says an expansion would cost up to $3.8 billion in the coming year.