Placing a casino and entertainment on the Silver Line will be a boon to Dulles Airport, which got its own Silver Line station last year, Marsden said.

While that area makes the most sense to Marsden, the legislation would allow the county to pick a site anywhere near one of the Silver Line Metro stations, including Reston. Marsden's preferred location is Tysons Corner, a suburb of the nation’s capital just a few miles from the Maryland border and a center of wealth that’s already home to successful high-end shopping malls and retail. This year, though, his proposal envisions far more than a casino and includes a convention center, concert hall, hotel, and other amenities. He introduced similar legislation last year that went nowhere.

David Marsden, D-Fairfax, is planning to re-introduce legislation that would allow Fairfax County to hold a referendum on building a casino. With casinos popping up on Virginia's southern border, some lawmakers now want to explore whether wealthy northern Virginia should get in on the action.

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