Trump to meet tech firms including Apple, Facebook and Google

Members of Silicon Valley's elite including Tim Cook, Larry Page, Satya Nadella and Sheryl Sandberg to meet president-elect in New York

One of the most pressing questions Silicon Valley leaders will want answered at their Wednesday meeting with President-elect Donald Trump is whether his administration will clamp down on the immigration policies that technology companies have come to rely on.

You only have to look at the executive boards of some of the world's fastest growing companies to see the contribution immigrants have made. According to a study by the National Foundation for American Policy, immigrants founded more than half (51%) of the current crop of US-based startups valued at more than $1bn.