The US military did try against Hezbollah, and after about 300 casualties the US military decided that maybe the goal wasn't worth it. I think the US military

The US military did try against Hezbollah, and after about 300 casualties the US military decided that maybe the goal wasn't worth it. I think the US military absolutely could win, unless winning requires casualties. All the US military needs to win is an enemy that cannot choose where/howto fight. If the enemy chooses a way where fighting involves casualties, the US military will retreat into its bases, send some long-range bombers, maybe make a photo of the president saying "mission accomplished" on an air base, and finally retreat.