I wouldn't be there in the first place. I don't go any place the clown in chief goes. I have been to DC twice in the past 3 years, both times while he was not in town.
It isn’t hard to go to DC when Obama isn’t there.
Not that he would likely be seen by an ordinary American anyway.
If I were looking for Obama I would find Air Force One. That is where he spends most of his time.