What part of the article is beyond your grasp here? They got 'no match' letters from the Feds and they followed all of the requisite procedures up to and including the separation of the employees.
Target complied with the law.
Everyone at the corporate office said, "Shazzam" in unison!!
Then after pulling their applications, they found they were all but blank or filled out by someone else other then the applicant, and upon close inspection by Mr. Corrupt Hirecheap, found the state seal behind their photographs on the drivers licenses depicted Pancho Villa sitting on a jackass.