Setbacks in billionaire insider Henry Tang’s bid to become chief executive of Hong Kong are revealing yet more evidence of official sleaze and of his unfitness for the position. It had once been assumed that Tang was almost sure to be chosen on March 25 by the group of special interests that make up the 1,200 member Election Commission and that as in the past the “race” would feature a token alternative establishment candidate, in this case Leung Chung-hing, a property surveyor from a modest local background and member of the territory’s Executive Council.