05/08/2010 05:12 am ET Updated May 25, 2011

Flat Tax Lessons From Bulgaria

SOFIA, Bulgaria �" American economist Alvin Rabushka keeps the flags of about 30 nations�" mostly post-communist countries like Bulgaria and Slovakia �" in his office at Stanford University's Hoover Institution. They remind him of the bittersweet victories he's helped achieve since he co-authored "The Flat Tax" in 1985.

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