This daughter of U.S. Senator (and former West Virginia Governor) Joe Manchin III overcame a 2008 scandal involving an MBA she earned improperly at West Virginia U. She rises to the top of generic drugmaker Mylan after 20 years in operations and strategy.
Boardroom battles and power plays shaped this year's U.S. list, which boasts eight new faces and -- surprise! -- a new No. 1.
