Likely the Russians gave fake names on their visas? I don't know how this works. Who clears these people? Are these the Russians that Obama sent back to Russia shortly before the election? If my memory serves me right. It was right before or shortly AFTER. Hmmmm.
Here are the Russians. Obama sent them home Dec. 2016. Imagine that.
https://www.theguardian.com/us-news/2016/dec/29/barack-obama-sanctions-russia-election-hack
Well somebody let them in. Probably the State Dept. Obama sent 34 Russians home Dec. 2016. Why the rush?
https://www.theguardian.com/us-news/2016/dec/29/barack-obama-sanctions-russia-election-hack
Not that I know of. I See the timing as questionable. Get them out of dodge. Then tell Trump.
To me it seems hasty. I wondered about it at the time.