Can US President Trump 'cut off all trade' with Spain?

President Trump has ordered a trade embargo against Spain, which includes cutting off all trade. This action stems from ongoing tensions regarding Spain's defense spending contributions to NATO. The U.S. president possesses broad powers under the International Emergency Economic Powers Act for such measures. However, legal experts question if defense spending disputes meet national security threat criteria. Spain is NATO's seventh-largest defense spender and a significant contributor of troops abroad.