Himachal Transport Minister G.S. Bali submitted his resignation to senior Congress leaders as he was allegedly unhappy with his portfolio, party sources said. The minister himself refused to comment on the issue.Bali was allegedly upset with the style of functioning of the five-month-old Virbhadra Singh cabinet, they said, adding that Chief Minister Virbhadra Singh was in Delhi."No comment. I will talk to the media on the issue tomorrow," Bali told. The Chief Minister's Office refused to say anything on the issue. "We have no information," an official said.Party sources said Bali submitted his resignation to Congress leaders Ahmad Patel and the state's party in-charge Birender Chaudhary for consideration and forwarding to Congress president Sonia Gandhi."Bali was unhappy with the portfolios allocated to him," a party leader said.Besides transport, Bali holds civil supplies and technical education portfolios.