Forum:Head of State Problem

I'm having an issue with the Head of State Quest. I went to the Lincoln Memorial and talked with Leroy Walker. I pissed him off and he and his friend Salis started attacking me. I got the quest to kill all the slavers. I did that and it said to visit Hannibal Hamlin in the Union. I went there and talked to Hannibal but there's no option about discussing the quest. The only options are "so you used to be a slave?", "What are you doing in this hole?" and "I have to go now". Anyone else run into this? Please help!