Since the end of World War Two, the United States of America has enjoyed being a world super power. The Petrodollar is a major part of why the US dollar has been the world's reserve currency, but that is about to change significantly.
Saudi Arabia has joined BRICS (an economic bloc aiming to reduce reliance on the US dollar), and the Crown Prince of Saudi Arabia has decided to end the requirement of oil being sold only in US dollars. Life here is about to get a lot more expensive for the American people.
https://metalsedge.com/the-prince-of-saudi-arabia-decides-not-to-renew-the-petrodollar-agreement/#:~:text=Conclusion,reliance%20on%20the%20US%20dollar.