Warren Buffett says CEOs of major companies don't need to put their political beliefs into a "blind trust."
During his "Ask Warren" live appearance on CNBC's Squawk Box, a viewer's email suggested a CEO of a major company has a fiduciary responsibility to shareholders to "not get into such a public and antagonistic debate," such as the fight over taxes.
Buffett 's response: "I don't think you give up your citizenship."