11.   Officials had never checked to see if he had a valid U.S. visa, which he did.

12.   One of the two guards traveling with Mrs. Mandela also arrived without a valid visa.

13.   Posting thousands of federal officers along the frontier will do little to stop terrorists who come into the U.S. clutching valid visas, experts said.

14.   She represented several Israelis who came to the United States with valid visas.

15.   She was arrested in Canada for not having a valid visa.

16.   The bill also allows immigration officials to automatically keep out of the United States anyone without valid visas and passports.

17.   The rapid-fire questioning continued, she said, even after she showed a valid visa and passport and conference material, documenting her trip to Mesa.

18.   They both had diplomatic passports and valid visas.

19.   They all possessed valid visas for Pakistan.

20.   Though he was carrying a valid visa and a U.S. passport, he was seized three weeks ago while crossing into China from the former Soviet republic of Kazakhstan.