If a group of people born in Texas were to move to Australia and decided to kill thousands using money from Texas to do it should Texas be held responsible for the act?

I don't know for certain if Saudi government gave Bin Laden money or if it came from individuals or groups in the country nor do I care, they don't appear to be harboring terrorist.

I don't know why your company has cancelled it's trip but I am sure your country is not part of the ban so it may not be cancelled from our end.