This interesting tid bit comes courtesy of Ralph Grabowski's  upFront.eZine newsletter. You can have a new hobby by checking out how many H1B visas are hosted by companies that interest you.

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Clemson University records the number of H1B visa-holders in the USA. H1B allows US companies to employ foreign workers for 3 or 6 years in occupations that require a minimum of a bachelor's degree. (Canadians can work in the USA under similar conditions through the TC1 visa program.)

For the CAD companies I checked, the number of H1B employees in 2007 were:

Company         No.     Average salary

------------    ----    ------------------------

Autodesk        75      $76,690

Bentley         31      $68,189

IronCAD         2       $66,500

Nemetschek NA   2       $74,646

PTC             106     $77,411

SolidWorks      14      $81,956

UGS Corp        74      $77,851

Link: http://career.clemson.edu/graduate_students/H1B/2007/