American Lobbyist

 is a mission in Red Dead Redemption.

Story
You successfully blackmailed an opponent of Nate Johns' using compromising photographs, and were rewarded for the task.

Walkthrough
Go to the "?" blip in Blackwater and accept the mission. The man you receive the mission from will give you some photos, you can look at them if you want.

Bring the photos to the purple "?" blip in the building next to him. The building will be closed at night.

Show the photos to the man and then return to the person you got the quest from.

Trivia
You can view the three photos in your inventory