He will say so, and you may disagree with him too - politely, of course!
你也可能会不同意他的看法——当然,你应该礼貌地告诉他。
These days, it is differences in national regulations, far more than tariffs, that put sand in the wheels of trade between rich countries.
当前,是各国管理条例上的差异,而不是关税阻碍了发达国家之间的贸易。