millions of dollars to deal with illegal channel crossings. hello and welcome to bbc news. start in the us where regulators have shut down silicon valley bank, one of the major lenders to tech companies and start ups. in one of the largest banking failures in the us since the 2008 financial crisis. tech correspondent jane clinton has explained how it happened. but forjames. this is one of the days that will go down in silicon valley history and it certainly one of the most stressful days for silicon valley founders in modern times. we spoke to people today who have been able to withdraw their money from silicon valley bank and some haven t. one person put in a wire request