The current issue of The Economist has a special on the Bush presidency. There is a great in-depth analysis (subscription required) unearthing the most crucial aspects of the current presidency: the alleged ?revolution? in foreign policy, the pursuit of big-government conservatism and the dramatic expansion of presidential powers.
The most devastating statement: "Almost all governments bend the truth. This one has seldom resorted to outright falsehood; instead, the administration has manipulated public information and breached basic standards of political conduct in Congress, the civil service and public debate. Whatever the merits of increasing presidential authority, Mr Bush has achieved his aim less by winning support for more power than by weakening the authority of other institutions."
Here is the freely accessible lead article.