A decent piece and one I'm posted here mainly for historical purposes. It is helpful in how it summarizes some of the evidence we've all seen thus far in a concise, albeit rough, way.

Grounds for Impeachment | The Progressive: "Grounds for Impeachment
By Matthew Rothschild
March 7, 2006

George W. Bush and his Administration have been so brazen in violating the law and asserting monarchical powers that we, as American citizens, must use the tool that the Constitution provides to reassert our rights, to reset the system of checks and balances, and to reestablish our democracy. That tool is impeachment."