Why Trump's latest speech is a big deal for Silicon Valley

President Donald Trump was in Wisconsin on Tuesday, but his words probably resonated most in California. 

He announced a plan to overhaul an American visa program that brings tens of thousands of workers and students to the United States every year, many of whom find work in tech-related jobs in Silicon Valley.

"American workers have long called for reforms to end these visa abuses," Trump said. "They should never, ever be used to replace Americans."

The United States admits 85,000 people into the country each year on H-1B visas, 20,000 of whom are graduate student workers. But Trump says companies exploit the system to the disadvantage of American workers.  Read more...