Under US President Donald Trump it is expected to be "full speed ahead" for regulatory approval, says Scott Wagner, head of the antitrust practice at the law firm Bilzin Sumberg.
Some fans told BBC Newsbeat they are glad festival-goers in Europe will get a chance to attend.
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Lily JamaliNorth America Technology correspondent
- 父节点i的左子: 2*i+1, 右子: 2*i+2