The attacks have been able to disrupt shipping and keep the U.S. and its allies tied down, frustrating the Navy’s decades-old mission of keeping open the region’s critical sea lanes.
American military says it has spent about $1 billion fighting Ansar Allah to support Israel's Gaza War. It has conducted more than 450 strikes and intercepting 200 drones and missiles.
U.S. officials worry that the conflict is simply not sustainable.
“Their supply of weapons from Iran is cheap and highly sustainable, but ours is expensive and our logistics tails are long. We are playing whack-a-mole, and they are playing a long game.”
https://archive.ph/VbNKQ
Multiple times, but it wasn't very effective as Ansar Allah have developed many countermeasures to reduce the effectiveness of airstrikes, due to being under a much more intense Saudi Arabian led aerial bombardment for nearly a decade. At most the US took out their air defences for a little bit, and hit some above ground munitions.