President Donald Trump rarely invokes emergency powers to avoid U.S. Congress objections and proceeded with the transactions of arms deal with Saudi Arabia and U.A.E.
Source: USA Today
It is because of a national emergency between U.S. and Iran that later became a threat from the latter that gave permission to 22-piece arms deal amounting to U.S.$8B.
The U.S. Congress never agreed to this arrangements between U.S. and Saudi Arabia involving military operations against Yemen.
President Donald Trump, frustrated with U.S. Congress, considered bypassing them and made up a weapons deal to sell Raytheon Co precision-guided munitions to Saudi Arabia, declaring a national emergency in the U.S.
Senator Bob Menendez, a high-ranking Democrat on the Senate Foreign Relations Committee aired his disappointment as to President Donald Trump failed to prioritize U.S.'s long-term national security interests and instead granted favors to war-like countries like Saudi Arabia and U.A.E. Weird!?!
Source: New York Times