Here are the clues - as always, don't post the answer if you figure it out:
1. Remove Nader Hartman
Solution:
Ralph Nader was/is a member of the Green Party. The important point is GREEN.
Phil Hartman - use his first name - Phil - which is like Phyll
Green Phyll is like Chlorophyll because Chloro means green in this context.
Remove Cholorophyll - The reason leaves turn color is the loss of their cholorophyll.
David
ATB StockBoy