McDonald’s has until mid-June to respond to a federal lawsuit accusing it of discrimination for refusing to serve blind customers who walk up during late-night hours when only the drive-thru window is open.

The plaintiff, Scott Magee of Metairie, Louisiana, said in court documents filed in U.S. District Court in Chicago that he was laughed at and turned away from the drive-thru window at a McDonald’s in the New Orleans suburb late at night last August. It wasn’t the first time that had happened, Magee alleged.

Many McDonald’s restaurants nationwide continue service through their drive-thru windows late at night after…

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