Under a secretive agreement with the Bush administration, a company in the United Arab Emirates promised to cooperate with U.S. investigations as a condition of its takeover of operations at six major American ports, according to documents obtained by The Associated Press. The U.S. government chose not to impose other, routine restrictions. In approving the $6.8 billion purchase, the administration chose not to require state-owned Dubai Ports World to keep copies of its business records on U.S. soil, where they would be subject to orders by American courts. It also did not require the company to designate an American citizen...