President Trump's latest executive order on immigration will sharply curtail a visa program used by hundreds of thousands of people currently living in the United States.

It also threatens some operations of the big tech companies that have tried hard to curry favor with Trump this year, raising the question of how much return those companies are getting on that ongoing investment.

The president on Friday signed an executive order adding a $100,000 fee for high-skilled workers to enter the country through the H-1B visa program. It's a steep and dramatic overhaul for a program that many large companies have used to hire thousands of software engineers and other highly-specialized workers.

Now some of those companies are warning their workers to remain in the United States — or to

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