washington u.s. president barack obama monday say china recognize could sustain export-driven growth model indefinitely would take time change speak state governors white house obama urge press u.s. congress approve trans-pacific partnership trade pact boost u.s. export region china 800-pound gorilla obama say tempt china try solve short-term problems dump state-subsidized goods u.s. market say administration make clear china would work obama say recognize forever sustain export-driven growth model go take time tempt solve short-term problems dump bunch state-subsidized goods u.s. market obama say response question raise concern china export iron ore. clear fact go work go put place tool make sure work say obama also say unite state make clear china need orderly market-based currency system advantage company u.s. counterparts right frankly intervention prop currency rather devalue lot people nervous chinese economy say obama tell governors cautiously optimistic congress ultimately back 12-nation tpp trade pact labor unions oppose obama call emotions job losses past trade deal concern china 800-pound gorilla allow set trade rule american businesses american workers go cut say obama say would rely vote set strong pro-trade democrats congress well republicans obama acknowledge republicans also concern along margins tpp provision affect tobacco say campaign nov. presidential election roil debate party senate majority leader mitch mcconnell republican say problems tpp think pursue election obama china know sustain export-driven growth model