WASHINGTON - It was one of the more tantalizing, yet unresolved, questions of the investigation into possible connections between Russia and Donald Trump's 2016 presidential campaign: Why was a business associate of campaign chairman Paul Manafort given internal polling data — and what did he do with it?A Treasury Department statement Thursday offered a potentially significant clue, asserting that Konstantin Kilimnik, a Russian and Ukrainian political consultant, had shared sensitive campaign and polling information with Russian intelligence services.Kilimnik has long been alleged by U.S.