By Brett Wolf, Compliance Complete ST. LOUIS, June 18 – The pivotal role BNP Paribas played in helping Sudan sell oil in violation of U.S. sanctions is the major reason U.S. authorities are pushing for harsh penalties against the French banking giant, two sources with firsthand knowledge of the matter said.”BNP basically was the Sudanese economy. They were just huge in helping the government of Sudan evade U.S. sanctions,” one of the sources said.BNP’s role involved removing references to Sudanese parties from wire-transfer messages, so U.S. dollar oil payments could clear through New York and move into accounts controlled by Khartoum, the sources said. The sources declined to name the buyers of the Sudanese oil or to say what Khartoum did with the revenue.