The US never really needed it for domestic consumption. The US empire wants to control access to energy to control the world. Also for petrodollar recycling.

Michael Hudson, Jan. 2020: America Escalates Its “Democratic” Oil War in the Near East

Here once again Saudi Arabia plays a critical role, through its control of Wahabi Sunnis turned into terrorist jihadis willing to sabotage, bomb, assassinate, blow up and otherwise fight any target designated as an enemy of “Islam,” the euphemism for Saudi Arabia acting as U.S. client state. (Religion really is not the key; I know of no ISIS or similar Wahabi attack on Israeli targets.) The United States needs the Saudis to supply or finance Wahabi crazies. So in addition to playing a key role in the U.S. balance of payments by recycling its oil-export earnings are into U.S. stocks, bonds and other investments, Saudi Arabia provides manpower by supporting the Wahabi members of America’s foreign legion, ISIS and Al-Nusra/Al-Qaeda. Terrorism has become the “democratic” mode of today U.S. military policy.