You mean the allegation she worked for, and was President of, a company that supplies ISIS with money and materials? IMHO, it's not nearly enough to get her busted - she did work for the company decades ago, before ISIS was even a glimmer in al-Zarqawi's eye. Old history, where one could adopt Hillary's famous shrug and say, "What difference does it make?" Now if Assange can provide incontrovertible evidence of Hillary's continued and knowing participation in this company's dealings, that would be a different story altogether.
I think he's referring to her perjuring herself under oath with a direct answer to a direct question from Rand Paul. Running weapons into Syria or some such was the question.