US Republican presidential candidate Donald Trump speaks during a news conference regarding issues on undocumented immigrants in Beverly Hills, California, last year. Trump has vowed to end the H-1B visa programme, which many tech companies rely on to hire highly-skilled workers from abroad. Photograph: Jonathan Alcorn/Reuters

The prospect of a President Donald Trump is rattling Silicon Valley – even if his fellow Republicans can’t find any trace of his campaign there. The (...)

Microsoft and Twitter have joined calls by Google and Facebook to be able to publish more detail about how many secret requests they receive to hand o(...)