The USA is one of four countries where VAR is being used that will have referees in Russia. The others are Germany, Italy and Poland. Four other VAR countries -- Australia, Belgium, Portugal and South Korea -- didn't have a referee selected.
One of the big concerns with the introduction of VAR for the World Cup is with referees who have not worked with the system on a regular basis.
England won't have a referee at the 2018 World Cup. As recently as 2010, Englishman Howard Webb refereed the final. He headed MLS's VAR project and is now PRO's chief.
For the first time since 1938, the last World Cup at which British teams did not enter, no British official will be at the World Cup.