American had learnt the leasson from the collapse of Enron in 2001 and WorldCom in 2002. Directors, auditors learnt to be vigilant and independent in corporate-overhaul law. It can be seen where for the pass few years, board members are fairly dare to challenge the chief executives, but increasingly, boards are flexing muscles in forcefully changing the governance in place for the more healthier business rally.

The actions that they take is like punishing the lacklustre performance and ethical lapses happened on chief executives. In fact, the vigilance stems in part from new federal rules and stock exchange requirements at the NYSE and on Nasdaq market. The change have spurred a shift in corporate culture of new fresh openness, but somehow sometimes it is reckoned as dramatic change to a culture of skepticism.

The exit of Carly Fiorina from HP was after her failuire in producing the level of profit goal she had pledged.

Ouster Michael Eisner, Disney long-time chairman was in the case of friction between him and board fighting got greater control.

Ugly corporate scandals massively heightened sensitivity to public-relations embarrassment, which driving to scrutiny. Boeing chief executive Harry Stonecipher is the example, deposed due to an extramarital relationship.

Recent step down of Maurice Greenberg, American International Group chief executive was caused of several regulatory inquiries. Amid signs of improving economic outlook, new promising bloods are needed for whole business landscape. The courageous upheaval outperformed by some American corporates implies their determination to stay brutally at the top against other nations.