washington president donald trump declare china grand champion currency manipulation thursday hours new treasury secretary pledge methodical approach analyze beijing foreign exchange practice exclusive interview reuters trump say hold back assessment china manipulate yuan currency despite act campaign promise declare currency manipulator first day office well think grand champion manipulation currency hold back trump say see happen presidential campaign trump frequently accuse china keep currency artificially low dollar make chinese export cheap steal american manufacture job treasury secretary stephen mnuchin tell cnbc thursday ready pass judgment china currency practice ask u.s. treasury plan name china currency manipulator time soon mnuchin say would follow normal process analyze currency practice major u.s. trade partner treasury require publish report practice april 15 oct. 15 year process within treasury go look currency manipulation across board go process past mnuchin say first televise interview since formally take department last week make judgments go continue process formal declaration china country manipulate currency require u.s. treasury seek negotiations resolve situation process could end punitive tariff offender goods u.s. treasury designate taiwan south korea currency manipulators 1988 year congress enact currency review law china last country get designation 1994. current situation complicate china central bank spend billions dollars foreign exchange reserve past year prop yuan counter capital outflows international monetary fund say last year yuan value broadly line economic fundamentals u.s. treasury also say last currency report october view china external imbalances improve somewhat trump pronouncements yuan could also complicate matter mnuchin prepare first meet next month group 20 finance minister counterparts baden baden germany exclusive trump call chinese 'grand champion currency manipulation