Torture is gravely immoral. Period. It is intrinsically evil. Period.
The enhanced-interrogation-techniques of the Bush-Cheney administration constituted torture.
But what about their purported efficacy– in extracting valuable information from terrorism suspects? See this article from Newsweek on the recently released government report and ex-VP Cheney’s overblown and/or outright false claims:
http://www.newsweek.com/id/213620
Also related: http://theplumline.whorunsgov.com/torture/top-bush-terrorism-adviser-admits-cia-docs-didnt-prove-torture-worked/