Former Secretary of State Hillary Clinton's presidential campaign is highlighting a new interview with "Clinton Cash" author Peter Schweizer as proof that his upcoming book is nothing more than a partisan smear. "By finally admitting that he omitted key details and has no direct evidence, the author of 'Clinton Cash' just confirmed what many media reports had already made clear." Clinton campaign spokesman Josh Schwerin told Business Insider on Sunday, "'Clinton Cash' is nothing more than a tangled web of conspiracy theories backed by no actual evidence." Schweizer has been generating a flood of critical headlines battering Clinton's campaign since last Thursday, when multiple news organizations published their investigations based on his work.