Cain hopes eligible borrowers in the state take advantage of the program.
"Just a few extra dollars in people's pockets will really help a family," he added.
The program was launched last year in 19 states that were hit hard by the housing market crisis.
Around 3,400 loans totaling $453 million were refinanced in those states over the past year, Trevino said.
The federal agency opted to expand the program into states including West Virginia, Arkansas, Texas, Missouri and Montana and Puerto Rico because of their high proportions of consistently poor counties, she said.
Cain didn't know how many borrowers in West Virginia would be eligible.
About 235,000 USDA loan recipients in the pilot states were eligible, Trevino said. She added that she was not disappointed that only about 3,400 borrowers had taken advantage of the program in the past year.
"We would normally only refinance one-third of that number in a year," she said.
The refinancing program will not require additional funds from Congress, as it is self-sustaining and paid for by fees levied on the loans themselves, Trevino said.
Anyone wishing to participate should contact the area USDA office, Trevino said. The borrower can also contact the lending institution if they received a USDA guaranteed loan.
Refinanced loans must be at interest rates at least 1 percent lower than the original interest rate, and terms cannot exceed 30 years.