Money in the 21st Century" by Kevin Phillips? I found this review this morning and it looks like he ties oil politics, debt, and religious fundamentalism altogether.
http://www.politicalaffairs.net/article/articleview/3886/"The basic thesis of the book is that America is in the throes of several converging crises: a crisis of ideology, manifested in the rise of Christian and, to a lesser extent, Jewish fundamentalism, and their becoming a significant part of the ideology of the state and the Republican Party; a crisis of oil dependency, which is deepened as the world’s supply of oil peaks; and a crisis of debt, manifested in historically unprecedented levels of private, business, government and foreign indebtedness. Phillips argues that the George W. Bush presidency is at the center of these converging crises. It is entangled in oil and debt capitalism and is deeply implicated in the right-wing evangelical ideological movement. Due to these entanglements it can only deepen these crises. Phillips does not suggest that a Hillary Clinton or John Kerry presidency would make a significant difference. He argues that the GOP government in Washington is a Southern-dominated, biblically-driven rogue coalition, like the Southern slavocracy before Lincoln’s election." - Anthony Monteiro