Why The Republicans Have so Much Love For The Saudis?

why the republicans love the saudis so much, hugging, kissing every time they go over there? isn't the saudis responsible for what happened in september 11 because all the hijackers came from saudi arabia and where saudis? whats going on? how come we didn't attacks saudi arabia but we attack iraq that had nothing to do with september 11? why we love the saudis but hates the Iraqis?