The text of the Articles of Impeachment for Cheney can be found here. The quick summary is as follows:
Article 1: Cheney purposefully misrepresented intelligence to deceive the people of the United States and the US Congress about Iraqi weapons of mass destruction.
Article 2: Cheney purposefully misrepresented intelligence to deceive the people of the United States and the US Congress about Iraqi ties to al Qaeda
Article 3: Cheney has openly threatened aggression against Iran without any real threat to the US being evident, and done so with proven US capability to carry out that threat.

Not serious enough for impeachment, SL. If it was a blow job in the oval office, on the other hand….