The Metropolitan Washington Airports Authority says an underground station would be more convenient for travelers, despite being 330 million dollars more expensive than an above ground alternative.
But local politicians in Northern Virginia says that's far too expensive, and in a letter sent out earlier this week U.S. Transportation Secretary Ray LaHood agreed with them.
Now, they also have the support of a former backer of the underground Metro station D.C. Mayor Vincent Gray
"I'm convinced that this is going to result in a very substantial financial hardship," Gray said.
He added Virginia Governor Bob McDonnell told him the state can't make this project work financially with an underground station and Gray says he'd rather see this happen above ground, than not at all.