According to a report on pww.com:

“I have spent my whole life – since I was 17 years old – working at Pizza Hut. Instead of respecting my hard work, Pizza Hut has thrown me on the street with nothing,” said Leonidez Contreras, now 33 years old.

“Contreras is among over 200 workers in the Chicago area who have been fired by Pizza Hut since February after they were told to re-verify their eligibility for employment allegedly on the basis of “no-match letters” or face termination. The workers, mostly immigrants and Latinos, were given no notice and no opportunity to contest the information. Their cause was taken up July 10 by picketers at a Pizza Hut in the downtown Loop. Workers and their supporters shouted, “No justice, no pizza” and passed out informational flyers to pedestrians. The action was one of 30 around the country organized to protest unjust firings and discrimination.”

“On July 9, Homeland Security Secretary Janet Napolitano officially dropped the Bush-Chertoff rules for Social Security No-Match letters. This rule obliged employers of workers who received such letters to fire them if they could not clear up the discrepancy identified in the letter within 90 days”