A suspended member of the opposition New Patriotic Party, Dr. Charles Wereko-Brobby has strongly criticized President John Dramani for denting his credibility by intervening in a feud between his brother�s company and the state-owned Merchant Bank. He held the president cannot absolve himself of conflict of interest after documents and correspondence prove that he was involved in discussions on the indebtedness of Engineers (E & P)and Planners to the ailing bank.