Thanks for the link. However, it says that it's a Saudi Arabian blockade, the US participated at the beginning but was not the driving force behind it and did not stay for long.
However, in mid-2016 and amid escalating, international concerns regarding some of the strategic initiatives undertaken by the Saudi Arabian military in the conflict, the U.S. pulled back significantly on its participation in this joint planning cell, reducing its staff commitment to only five US workers.
US involvement since then has primarily been the supply of weapons. Like I say, the only real winners are arms dealers.