But some economists stressed the risks that a more aggressive U. S. policy poses. C.Fred Bergsten, director of the Institute for International Economists and a prominent member of the free-trade-establishment, said he saw little evidence for a strate

But some economists stressed the risks that a more aggressive U. S. policy poses. C.Fred Bergsten, director of the Institute for International Economists and a prominent member of the free-trade-establishment, said he saw little evidence for a strategy, except for “a willingness to listen to protectionist appeals" from the automobile,scmiconductor, steel and energy industries, among others: End a desire to moility these industrics' powerful congressional protectors.

但一些经济学家强调美国更富有攻击性的政策所带来的风险。国际经济学家协会会长及创立自由贸易的杰出人物C·弗德·伯格斯坦说除了汽车行业、半导体行业、钢材和能行业以及其他行业“愿意倾听保护主义者的请求”，他基本看不到有什么策略或愿望去改变国会对这些行业的强有力的保护。