Ex-Clinton strategist Mark Penn is cutting his agencies' offices to save more than $10 million and compete against giants like WPP and Accenture

· Former Hillary Clinton pollster Mark Penn plans to move most of his advertising and PR holding company MDC Partners to One World Trade Center by the end of 2020, two high-level sources told Business Insider.
· The relocation is part of Penn's efforts to pay down more than $1 billion in debt and compete with established ad...