He has served as deputy editor of The New York Observer and was editor-in-chief of Boston magazine.

[citation needed] On April 11, 2004, Unger wrote an op-ed for The Boston Globe demanding answers from the 9/11 Commission on who had given permission for Saudi nationals to leave the United States.

[2] He repeated the theme in his 2004 book, House of Bush, House of Saud, that was also featured in Michael Moore's film Fahrenheit 9/11: "Is it possible that President Bush himself played a role in authorizing the evacuation of the Saudis after 9/11?"

Unger reportedly traced $1.4 billion in investments by the Saudis to friends and business organizations closely associated with the Bush family.

[citation needed] Unger's 2007 book The Fall of the House of Bush is about the internal feud in the Bush family and the rise and collusion of the neoconservative and Christian right in Republican party politics, viewing each group's world view and efforts concerning present and potential future US policy through a distinctly negative prism.