The 2007 rush for H-1B guest worker visas has begun

April 1 marked the start date for technology companies to seek permission from the U.S. government to hire temporary foreign employees under the visa program, which permits up to 65,000 H-1Bs to be issued this year. Exceptions, however, allow that number to be exceeded.
The H-1B program allows foreigners with at least a bachelor's degree in their area of specialty to be employed in the United States for up to six years. They're currently capped at 65,000 visas per year, with an additional 20,000 visas set aside for foreigners with advanced degrees, after peaking at 195,000 between 2001 and 2003.

Source: ZDNet