The UPA finds itself in an incredible mess with the supremo, Ms Mamata Banerjee, of one of its constituents, the Trinamool Congress, peremptorily demanding the sacking of Mr Dinesh Trivedi, her nominee for the post of Railway Minister, within hours of presenting his Ministry's Budget. By the time this column appears, she would have had her way, with the enormous clout she enjoys politically and numerically.