Oregon apparel makers Nike and Columbia Sportswear have joined with several other companies to argue that the U.S. government should expand trade with Sri Lanka and 14 other countries, to mitigate the economic effects of last month`s deadly tsunami...Nike receives some apparel from three of the countries covered in [the] proposal: Sri Lanka, Bangladesh and Cambodia...[but] said the economic benefits to Nike would be small...Among nonprofit supporters of the plan is Oxfam America...