Should the Saudis authorise the US to use military force against Iran ?

The US is NOT required to defend Saudi Arabia even if the recent attacks on their oil fields was committed by Iran. The Saudis have received massive multi million/billion dollar purchases of US armaments, and I'd guess the technical assistance and training to go along with these military arms sales. And if not mistaken the Saudis would not necessarily be received well by the U.S. Gov't, if they were to claim Iran attacked them and ask, not "authorize" military force by the U.S. as they have no authority to do so. Our dog is not in that fight. And hey, the Saudis seem to be doing very well (inflicting some serious consequences on Yemen and the Houthi rebels, sadly many innocents as well.)