The US FBI said on Monday it was investigating after Donald Trump’s presidential campaign said its internal communications were hacked and the campaign blamed the Iranian government. The former president said on Saturday that Microsoft had informed his campaign that Iran had hacked one of its websites. Trump said Iran was “only able to get publicly available information”. The FBI is also investigating an alleged hack targeting advisers to the campaign of President Joe Biden and Vice President Kamala Harris, The Washington Post reported on Monday. The FBI began the investigation in June, when B…