washington new u.s. commerce secretary wilbur ross say president donald trump endorse propose border tax system tuesday first speech congress tuesday despite vow level tax play field u.s. company export ross speak reporters speech say trump merely point export tax inequity unite state many countries specify remedied trump say ask change way u.s. import tax say countries make us pay high tariff tax unite state charge nothing almost nothing import trump refer tariff 100 percent countries u.s.-made harley-davidson inc hog.n motorcycle say company use mistreat foreign market even ask change trump tell joint session congress ask trump remark topic effectively endorse plan house representatives republicans levy border tax 20 percent import unite state ross say not address issue need solve inequitable treatment u.s. countries value-added tax rebate export ross say say world trade organization turn past u.s. request allow american company deduct income tax pay export propose border tax attack import-heavy businesses support large exporters manufacturers border advisability program possible ways solve hear come clearly favor one system say ross swear early tuesday trump clearly endorse oppose border tax proposal although speak favorably reuters interview also call proposal complicate ask wto compliance crucial factor solution ross billionaire investor corporate turnaround expert say first negotiation export tax would congress u.s. commerce secretary say trump endorse border tax plan