Some of Westchester’s fastest-growing companies ought to benefit from their efforts to keep jobs in America, U.S. Sen. Kirsten Gillibrand said Friday.

Local biotechnology labs should be eligible for federal grants if they create local manufacturing jobs, said Gillibrand, D-N.Y., at a breakfast sponsored by Key Bank and the Westchester Business Council.

“We need that excellent workforce that we have right here in Westchester,” Gillibrand said.

Under her proposal, which she and Rep. Nita Lowey, D-Harrison, introduced in October, American and foreign manufacturers could apply for grants if they did their manufacturing in the United States.

Their legislation would not include big companies such as Regeneron — a Tarrytown-based biotech company that went from 400 employees to 1,650 in the past four years. Only biotech companies with fewer than 750 total employees are eligible; other manufacturers would need fewer than 1,000.