But any such shift would require solid Republican majorities in Congress and a cooperative White House, plus the ability to overcome opposition from some professional societies such as IEEE-USA and GOP-leaning grassroots that oppose much legal immigration. "I don't think [the GOP] will have a lot of success," said Rosemary Jenks, director of government relations for NumbersUSA, which is trying to reduce legal immigration; it now totals about 1 million people annually.