在美国建国250周年（即250周年半禧年）到来之际，这个国家正处于一个焦虑与强大并存的关键时刻。回顾历史，美国曾三次拯救世界免受暴政侵害，但如今国内政治分裂严重，权力分立体制正演变为总统集权的结构。虽然最高法院近期推翻了总统关于取消非法移民子女公民权的计划，但其裁定总统有权解雇联邦机构官员，这进一步扩大了行政权力。这种政治极化和权力集中引发了公众对体制失衡的深切担忧。
在人口与社会结构方面，曾经作为美国活力源泉和美国梦基石的移民政策正在收紧。随着白人人口比例降至接近50%，右翼保护主义势力抬头，部分MAGA运动成员试图切断包括合法渠道在内的所有移民通道，导致今年的净移民人数可能降至零。此外，在外交政策上，特朗普正引领一场“毁灭性革命”，试图砸碎二战后建立的盟友体系和多边机构，将国际贸易视作单边索取的工具，导致美国在国际舞台上逐渐退回孤立和自私的境地。
尽管政治体制失灵，但美国的经济与技术活力依然旺盛，特别是在人工智能（AI）领域，企业已迅速动员数千亿美元资金以确保技术领先。如果AI如预期般改变世界，美国在AI技术栈上的绝对主导地位将进一步转化为企业和军事优势，迫使盟友在服从美国或依附中国之间做出选择。尽管面临贫富分化加剧、行政权力泛滥和债务不可持续等挑战，但美国的自我更新和创造性破环能力依然是其克服停滞、走向复兴的最大希望所在。
As America celebrates its semiquincentennial, marking 250 years since its founding, the nation finds itself at an anxious crossroads characterized by immense power and deep internal division. Historically, the republic saved the world from tyranny three times, yet its current political landscape is marred by severe partisanship and a concentration of executive power. Although the Supreme Court recently struck down a presidential order targeting birthright citizenship, it simultaneously expanded executive authority by ruling that the president can dismiss federal agency regulators. This drift toward a dominant executive branch, coupled with gerrymandered districts that reward extremism, has fueled domestic fears that the separation of powers is decaying.
The demographic foundation of the American dream is also undergoing significant strain. Legal and illegal immigration routes face threats from the MAGA movement, raising the possibility that net migration could drop to zero this year. As the share of Americans identifying as white approaches the 50% threshold, nationalist rhetoric calling for special status for "heritage Americans" has re-emerged. Abroad, Donald Trump is spearheading a "wrecking-ball revolution" aimed at dismantling post-1945 alliances and multilateral institutions. Under this isolationist approach, international trade is no longer viewed as a system of mutual benefit but rather as a transactional tool for extracting foreign concessions.
Despite dysfunctional politics, America's technological and economic dynamism remains formidable, particularly in artificial intelligence. Tech firms have rapidly deployed hundreds of billions of dollars to build an insurmountable lead in the AI stack. If these technologies deliver their promised productivity gains, American corporations and the military will enjoy overwhelming dominance, leaving global allies with a stark choice between aligning with Washington or Beijing. While a predatory elite and fiscal unsustainability pose risks, the republic's history of reinvention suggests that its current restlessness is a necessary precursor to creative destruction and national renewal.
Source: America is anxious, and awesomely powerful
Subtitle: Restlessness is what prevents the republic from sinking into stagnatio
Dateline: Jul 02, 2026 08:46 AM