The chairman, CEO, and co-founder of Blackstone, the US private equity and real estate giant, has announced support for Donald Trump as a “vote for change” in the upcoming presidential election in September. Stephen A. Schwarzman on Friday said that he plans to donate to Trump and various Republican Senate candidates, according to US-based outlet Axios. Schwarzman’s backing of Trump grants the former US president access to a formidable network of Republican donors cultivated by the billionaire. Schwarzman, a lifelong moderate Republican and billionaire, had been one of Trump’s most visible business supporters during his tenure in the White House....