He is editor of the conservative magazine, The Weekly Standard. He also chairs the neo-conservative think tank, Project for the New American Century. He is one of the architects of the blueprint for regime change found in the document "Rebuilding America's Defenses: Strategies, Forces and Resources for a New Century."
In January, Hamill was invited by first lady Laura Bush to the White House for a symposium on poetry. Because of his opposition to the war it was not an invitation he welcomed. In response, he created the Web site poetsagainstthewar.org. Thousands of poets responded, including Rita Dove, W.S. Merwin, Adrienne Rich and Poet Laureate Billy Collins. When the White House heard about the site, the symposium was cancelled. A new anthology, Poets Against The War, collects 13,000 of these anti-war poems.
During the 1991 Gulf War, he flew 30 combat missions in his F-16. He wrote about the experience in his book, Vipers in the Storm: Diary of a Gulf War Fighter Pilot.