On February 15, 2019, then-U.S. President Donald Trump declared a national emergency to bypass congressional appropriations and redirect funds toward construction of a wall along the U.S.-Mexico border. This move followed Congress’s failure to approve a budget that included sufficient funding for the wall, which had previously triggered the longest partial federal government shutdown in U.S. history—lasting 35 days. Invoking the National Emergencies Act, Trump sought to reallocate approximately $8 billion from the Department of Defense and other federal agencies for the border barrier project.The declaration sparked intense controversy. Democrats condemned it as unconstitutional, arguing that the president was overstepping his authority and infringing on Congress’s exclusive power of the purse. Even some Republican lawmakers expressed concern, emphasizing the importance of maintaining the separation of powers. In response, Congress passed a resolution to terminate the emergency declaration, but Trump vetoed it. Multiple states and civil rights organizations filed lawsuits challenging the legality and necessity of the emergency.The emergency status remained in effect until President Joe Biden officially rescinded it in 2021. The episode highlighted deep political polarization in the U.S. and became a landmark case in debates over the limits of presidential emergency powers.
2019年2月15日，时任美国总统唐纳德·特朗普宣布进入国家紧急状态，旨在绕过国会拨款程序，为美墨边境墙建设筹集资金。此举源于国会未能通过包含足够建墙经费的预算案，导致特朗普政府此前经历史上最长的联邦政府部分停摆（35天）。根据《国家紧急状态法》，总统可在特定危机下动用特殊权力调配资源。特朗普援引该法，试图从国防部和其他联邦机构转移约80亿美元用于边境墙项目。此决定引发广泛争议。民主党人强烈谴责其违宪，认为总统滥用行政权力侵犯国会财政权；部分共和党议员也表示担忧，强调应维护三权分立原则。随后，国会通过决议试图终止紧急状态，但被特朗普否决。多个州和民权组织提起诉讼，质疑其合法性和必要性。最终，这一紧急状态持续至拜登政府上台后于2021年正式撤销。该事件凸显了美国政治极化背景下行政与立法分支之间的紧张关系，也成为关于总统紧急权力边界的重要法律与政治案例。
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