Joan Didion's book Political Fictions is a must-read for any Didion fan, anyone interested in American politics, or even better, someone who falls into both categories. Published in 2001, the book covers the presidencies of Clinton, Bush I, Reagan, and all the characters in between, with the perfect mix of dry sarcasm, empathy, and mild outrage. Some of the best essays include "Clinton Agonistes", "The West Wing of Oz" and "Vichy Washington."
See one of Didion's best essay's here, which dwells on her experiences of being young and moving to New York City. One of my favorite reads ever.