Them never-ending pursuit of them dead presidents
Is the reason I got the band back together, bitch
Dead presidents is rap slang for money. Black Thought is saying that the reason he got The Roots back together, or maybe the combination of Talib, Black Thought, and Rah Digga, is to get money.
To help improve the meaning of these lyrics, visit "Art Imitates Life" by Talib Kweli (Ft. Black Thought & Rah Digga) Lyrics 1 and leave a comment on the lyrics box