https://slate.com/news-and-politics/2018/07/trump-retracts-white-house-invitation-to-putin-that-putin-never-accepted.html
"Vladimir Putin won’t be dropping by the White House in the fall. National Security Adviser John Bolton said in a statement Wednesday that President Donald Trump now believes that a follow-up meeting between himself and the Russian leader “should take place after the Russia witch hunt is over, so we’ve agreed that it will be after the first of the year.” It’s not exactly clear why he believes the “witch hunt” will be over by then."