Last year, the immigration bureau cut off new applications in August after reaching the 65,000-visa limit for the 2006 fiscal year. That marked the earliest date the cap has been reached so far. Vic Goel, an immigration attorney based in Reston, Va., believes visas will disappear at a similar pace this year -- if not faster.

"People have been waiting for the filing date to reopen, so there is going to be some pent-up demand," he said.

The current cap of 65,000 doesn't include the 20,000 H-1B visas that were issued to advanced-degree holders. The Senate bill would provide for automatic increases in subsequent years once the proposed 115,000 H-1B cap is reached and would eliminate any visa cap for advanced-degree holders.

Any H-1B cap increase is opposed by IEEE-USA, which instead supports efforts to make it easier for foreign workers to gain permanent residency. One provision in the legislation is to create a student visa that can ease the process of gaining a green card.

Ralph Wyndrum, president of IEEE-USA, said his group opposes the H-1B visas because they can be abused by employers, who often treat visa holders like indentured servants. Such workers also risk losing their employers' support for permanent residency if they push for improvements, he said.