While I initially found the alleged illegal wiretapping authorized President Bush very troubling, it seems much more so after reading Bruce Schneier‘s blog on The Security Threat of Unchecked Presidential Power:

… the president’s wartime powers, with its armies, battles, victories, and congressional declarations, now extend to the rhetorical “War on Terror”: a war with no fronts, no boundaries, no opposing army, and — most ominously — no knowable “victory.” Investigations, arrests, and trials are not tools of war. But according to the Yoo memo, the president can define war however he chooses, and remain “at war” for as long as he chooses. This is indefinite dictatorial power.

I definitely recommend reading the entire article, as well as the preceding article on the subject, NSA and Bush’s Illegal Eavesdropping.