The man chosen by George Bush to be U.N. ambassador told Iran-Contra congressional investigators he acted as a courier in a secret plan to provide military equipment to the Nicaraguan Contra rebels at a time U.S. government assistance was prohibited. Thomas Pickering testified in July 1987 before the Senate Select Committee that investigated the Reagan administration's secret arms sales to Iran and the subsequent diversion of profits to the Contras. Pickering told the panel he carried a document provided by a private group that planned to provide weapons to the Contras, giving it to then-National Security aide Oliver North. He said he believed the document discussed a donation or sale of weapons and equipment.