Intent on making a flawless impression as the first host of the world’s fair in the Middle East, Dubai has spent over $7 billion on pristine fairgrounds and jubilant festivities. But propping up the elaborate fair is the United Arab Emirates’ contentious labor system that long has drawn accusations of mistreatment. JON GAMBRELL/AP FILE
DUBAI, United Arab Emirates – Intent on making a flawless impression as the first host of the world’s fair in the Middle East, Dubai poured…