Fly into Reagan National if possible. You'll pay a bit more, but IMHO it's worth it. Then you just hop on the Metro to your hotel and to the rally site. If you do fly into Dulles or BWI, you can get an airport shuttle over to National. Or from BWI a short shuttle ride allows you to take the Amtrak or MARC train down into Union Station.
Stay away from a rental car, if possible. Driving in downtown D.C. can be a nightmare for locals, not to mention visitors.
Stay away from a rental car, if possible. Driving in downtown D.C. can be a nightmare for locals, not to mention visitors. When I visit DC a couple years ago .. we made the mistake of trying to drive in the downstown
Finally bagged it .. found a parking garage and just walked
It was way faster that way