The following is based on information from Van Buren design documents and is not canon.
Expose Crimson Caravan to Governor Dodge using evidence and helping Major Fleming with the arrest was going to be a quest in Van Buren, the canceled Fallout 3 by Black Isle Studios.
After telling Major Fleming about Ailis' ledger and her dealings with Devon Hill, Fleming will tell the player to show the ledger to Governor Dodge. All the player needs to do is take the ledger to Dodge. Once there, Dodge will ask the player if he would assist in the arrest. If the player agrees, goes with Major Fleming, and Fleming survives the battle (which he really should), then the player will get the XP once he returns to Dodge to say "mission complete."
Character type completion breakdown
Combat, Diplomacy, Stealth, Science Boy - Say yes to Dodge and go help Fleming with the arrest.