no matter how you slice it
Regardless of how one views something, as in No matter how you slice it, he's still guilty of perjury. This expression uses slice in the sense of “cut apart.” [Colloquial; first half of 1900s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.