Va. lawmaker wants Congress to wade into fight over DC Metro expansion to Dulles airport

This isn't the first time federal officials have taken an interested in the Dulles rail project, which has been named the Silver Line by WMATA. A $900 million grant from the Federal Transit Administration was used to pay for the first phase of construction of the railway, and last year, Transportation Secretary Ray LaHood negotiated a resolution to a rift between local leaders to keep the proposal to build the second half of the line on track again.

LaHood is scheduled to meet with Virginia officials again about the project soon, according to a recent report from The Washington Post.

LaHood has called it one of the most important public transit projects in the country.

"This project comes at a pivotal point as the Obama Administration begins to make vast improvements to our nation's top transit systems," LaHood said in a statement when the initial grant for the project was announced.

"It will create construction jobs, encourage economic development opportunities, and help Tysons Corner become a more livable community," LaHood continued.