Border Wall National Emergency (2019)
Trump declared a national emergency in February 2019 to fund a border wall Congress refused to pay for. The declaration redirected Pentagon funds to construction, bypassing lawmakers.
Courts split on the legality; the Supreme Court allowed the Pentagon fund transfers in a 5-4 ruling, and wall segments were built.
Established that presidents can use emergency declarations to redirect funds or bypass processes Congress denied, with courts as the main check.
Same president, same playbook: declaring a national emergency to achieve what legislation or appropriations didn't. The energy order extends this to environmental permitting.
