Not that I expect anyone to see this, but.

I think going INTO DC might not be the best angle. Since I believe that DC is not considered American soil, anyone who enters would be considered an enemy combatant. Look what they’ve been able to do to J6’rs.
A better strategy might be a blockade of DC. Stay in the states surrounding it and shut off access. This would also allow for monitoring of the Metro in and out. Not to molest anyone, but to keep track of coming and going of the supposed representatives of We The People.
DC is a trap. It’s like going to Mexico and expecting them to protect with American law. They have their own laws that they follow. You aren’t a citizen, they don’t care.