Sergey Kislyak appeared in the White House visitor logs dozens of times when Barack Obama was in office. The visitor logs, which Obama made public in 2009 in a push for transparency, show that the long-time Russian ambassador to the United States visited the White House at least 22 times between 2009 and 2016. Kislyak appeared in the logs as recently as September 2016 when he had a meeting scheduled with one of Obama’s senior advisers, John Holdren, in the Eisenhower Executive Office Building. The other visitors listed at the meeting are Marina W. Gross, Alexander Ermolaev, Alexey Lopatin, Vyacheslav...