Waterboarding is torture. Period.
In a December 15, 2008 interview with ABC News:
Transcript: Cheney Defends Hard Line Tactics
In Exclusive Interview With ABC News, Vice President Dick Cheney Opens Up About His Hard Line Tactics
…KARL: And on KSM, one of those tactics, of course, widely reported was waterboarding. And that seems to be a tactic we no longer use. Even that you think was appropriate?
CHENEY: I do…
It’s not “hard line tactics”, it’s freakin’ torture.
The United States prosecuted individuals for war crimes in the aftermath of World War II for waterboarding prisoners of war and civilian detainees:
Changi Prison, October 1943
…The Japanese were trying to establish that there was a spy organization in Changi Prison which received and transmitted by radio telephony, which had established contacts in the town for the purpose of sabotage and  stirring up of anti-Japanese feeling, and which collected money from outside for this purpose. In fact, there was no organization, no radio transmission and no attempt to promote anti-Japanese activities outside the Camp…
…Usually interrogations started quietly and would continue as long as the inquisitors got the expected answers. If, for any reason, such answers were not forthcoming, physical violence was immediately…
… employed. The methods used were:
(1) Water Torture. There were two forms of water torture. In the first, the victim was tied or held down on his back and a cloth placed over his nose and mouth. Water was then poured on the cloth…
International Military Tribunal for the Far East – Proceedings, p. 12,936.
Earlier in the ABC interview Dick “Elmer Fudd” Cheney stated:
…And I think those who allege that we’ve been involved in torture, or that somehow we violated the Constitution or laws with the terrorist surveillance program, simply don’t know what they’re talking about…
Dick Cheney is a fascist idiot and a war criminal. And an asshole. Big time.