The best proof of this was the US Trade and Tariff Act's Section 201, which was made effective on March 20, 2002, and imposed a 30% ad valorem duty on imported steel.
The best proof of this was the US Trade and Tariff Act's Section 201, which was made effective on March 20, 2002, and imposed a 30% ad valorem duty on imported steel.
2002年3月20日，美国正式启动201条款，对进口钢材加征30％的进口关税，这就是贸易保护主义的最好例证。