As the auditioning to be Donald Trump’s running mate reaches a fever pitch before the Republican National Convention kicks into gear in mid-July, billionaire donors are being increasingly being used as “pawns” by the leading contenders for the second slot to catch the former president’s eye. According to a report from the Washington Post, one of the keys to becoming the GOP VP nominee is the ability to bring more cash to the general election campaign and hopefuls are flaunting their big-money contacts as a reason to be the chosen one. The report also notes that not all of the wealthy donors ar…