FIFA president Gianni Infantino says people need to "chill" and trust the game's governing body as visa issues mount ahead of the World Cup.
Infantino addressed the media in Mexico City on Wednesday (Thursday AEST) ahead of the tournament opener between the co-hosts and South Africa.
In the lengthy press conference, FIFA's boss defended the organisation's handling of various visa problems, along with ticket prices at the event.
Infantino was pressed on Somali referee Omar Abdulkadir Artan having his World Cup dream ended by border control.
Artan, who was due to become the first Somali referee to officiate at the World Cup finals, was denied entry to the US after arriving to Miami International Airport from Istanbul on Saturday.
"It was unfortunate what happened with the referee from Somalia," Infantino said.
