I have two quests the tell me to go after him. One is "Wild Card: Change in Management" and the other is "The House Always Wins I." Both also tell me to deal with Mr. House. As a result, both quests have two quest markers, one on the Lucky 38, one on Fortification Hill.
But the second I get to the Hill, the quest marker there moves to the exit, indicating I need to leave. I have negative reputation with the Legion, so I can't just talk to them to eventually get the chip. I searched Caesar's tent: No sign of the chip. I killed both Caesar and Benny and looted their bodies: no sign of the chip. Just where the hell is this thing? And what is going on with these quest markers?