ILW.COM - immigration news: H-1B Usage, End of Visa Revalidation And Other Late Breaking Developments In Immigration Law H-1B Usage, End of Visa Revalidation And Other Late Breaking Developments In Immigration Law The American Immigration Lawyers Association (AILA) annual conference in Philadelphia, PA, June 9-13, 2004, was a packed event with many presentations on topical subjects and government speakers announcing important news. Here are some important announcements that we heard at the conference.