龙珠超

耶伦4月初来访，表面笑意盈盈，实则来者不善。    WASHINGTON -- The Supreme Court on Monday ordered two internet sellers of gun parts to comply with a Biden administration regulation aimed at ghost guns, firearms that are difficult to trace because they lack serial numbers.The court had intervened once before, by a 5-4 vote in August, to keep the regulation in effect after it had been invalidated by a lower court. No justice dissented publicly from Monday's order, which followed a ruling from a federal judge in Texas that exempted the two companies, Blackhawk Manufacturing Group and Defense Distributed, from having to abide by the regulation of ghost gun kits.Other makers of gun parts also had been seeking similar court orders, the administration told the Supreme Court in a filing.“Absent relief from this Court, therefore, untraceable ghost guns will remain widely available to anyone with a computer and a credit card — no background check required,” Solicitor General Elizabeth Prelogar, the administration's top Supreme Court lawyer, wrote. The regulation changed the definition of a firearm under federal law to include unfinished parts, like the frame of a handgun or the receiver of a long gun, so they can be tracked more easily. Those parts must be licensed and include serial numbers. Manufacturers must also run background checks before a sale — as they do with other commercially made firearms. The requirement applies regardless of how the firearm was made, meaning it includes ghost guns made from individual parts or kits or by 3D printers.The regulation will be in effect while the administration appeals the judge's ruling to the 5th U.S. Circuit Court of Appeals in New Orleans — and potentially the Supreme Court.。

二 | 披着经济学的外衣，打的都是政治利益的算盘。我们即使拿出丰富的数据进行反驳，也难以避免美国加征新一轮关税。
我在最近的直播里总结了六年贸易战的教训：

• 经济学家对新保护主义的反对大多不是源于自由贸易原教旨主义，而是源于美国最近在特朗普执政期间对中国进口商品征收广泛关税后的经验
• 关税--以及中国不可避免的报复--降低了消费、工资、制造业出口和总福利。

  

  三 | 贸易战带来的净福利损失与中国冲击带来的净收益形成了鲜明对比

• 关税并没有扭转美国制造业就业岗位减少的趋势，事实上还净损失了工厂的就业岗位。在贸易战期间，少数行业和州的制造业就业出现增长，但增幅非常有限
• Autor, Dornand Hanson (2021): 中美贸易战成功地抬高了美国产品的价格，但并没有扩大受进口保护行业的就业。没有任何研究证明事后贸易保护主义措施可以帮助因过去的进口竞争而受到伤害的工人。

也就是说，即使提出“中国冲击论”，强力主张中国制造业出口造成美国失业的三位学者Autor, Dorn和Hanson，都坚决反对加征关税和贸易保护主义！接下来，我会撰文详细说明六年贸易战对中美企业和家庭带来的伤害，期待大家的关注与转发。