LONDON - For Keir Starmer, securing record levels of U.S. investment into Britain has validated his offer of an unprecedented second state visit to Donald Trump, a high-risk gamble that was designed to keep the unpredictable president on side. Trump celebrated his historic visit to Britain by announcing 150 billion pounds ($203 billion) of corporate investment in the UK's technology, finance and energy sectors. Public opinion was split over whether Starmer was right to cosy up to Trump, but he managed to avoid any public blow-up and the deals agreed gave him a much needed boost after some of the...