Non-member guests have long been a part of Concacaf's tournament, and Saudi Arabia is now the eighth invitee to have debuted in the event.

Donald Trump came to Saudi Arabia earlier this month, with big U.S. business leaders in tow, to embrace Saudi’s young leader, Mohammed bin Salman, and his 2030 plans to reshape its oil economy.

On May 3rd Saudi Arabia told OPEC it would no longer underwrite such cheating, and would instead open the taps to regain its market share. The price of Brent crude duly slumped to around $60 a barrel.