问HN：单一总统签署是否应控制全球贸易政策？
我一直在关注市场因不断的关税公告而产生的混乱，并在思考这是否具有制度上的合理性。根据宪法，国会控制关税，但数十年的权力委托意味着总统可以通过一纸签名单方面重塑全球供应链。我们看到美国的关税率在短短几个月内从2.5%飙升至27%，绕过了正常的监管审查。
单一的行政决定可以影响数百万个就业岗位，并引发国际报复，而企业则在政策不确定性面前忙于适应，这种不确定性变化的速度快于法律挑战的解决速度。
对于那些在国际商务领域的人来说：你们如何适应这种程度的政策不确定性？
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I've been watching the market chaos from constant tariff announcements and wondering if this makes institutional sense.
Constitutionally, Congress controls tariffs, but decades of delegation mean a president can unilaterally reshape global supply chains with one signature. We've seen US tariff rates jump from 2.5% to 27% in just months, bypassing normal regulatory review.
A single executive decision can affect millions of jobs and trigger international retaliation, while businesses scramble to adapt to policy uncertainty that changes faster than legal challenges can resolve.
Should policies with trillion-dollar economic impacts require more institutional checks and balances? How do other major economies handle trade decisions - do they have better frameworks?
For those in international business: how are you adapting to this level of policy uncertainty?