"Rarely in our Nation's history has the Executive Branch launched such an assault on Congress's exclusive legislative powers," the brief reads. https://t.co/KXXA9npLFg

"Rarely in our Nation's history has the Executive Branch launched such an assault on Congress's exclusive legislative powers," the brief reads. https://t.co/KXXA9npLFg (via Twitter http://twitter.com/CNN/status/1126069408030515200)