The Houthi Movement was anti west in the beginning but now is ultra anti west.
Also they have been many times more effective in combating Al Qaeda (yes jihadist groups kill each other as well) than the U.S. war on terror in Yemen.
Also Saudi Arabia is dropping U.S. made munitions on the Houthi's and this is an example of their frustrations here. (Yes, Houthi's are not so stupid they can't read made in North Carolina on an munitions canister and realize how it got there).
The Sauds need to knock it off and leave the border there as is, not saying they should be denied self defense, but this war is getting more ridiculous by the week.