Bollywood actor Amitabh Bachchan's decision to become brand ambassador for Gujarat has not gone down well with the Congress, the party he had once represented from Allahabad as a Lok Sabha MP. "Amitabh Bachchan should not misuse his celebrity status and become the brand ambassador for the vested interests," said Rajeev Shukla, AICC secretary and co-ordinator for Gujarat, adding that state governments were not corporate entities that required a brand ambassador for image improvement.