From the linked article.
“Attorney General Jeff Sessions originally tried to claim that there was no connection between Uranium One and the nuclear transport bribery case, however several congressional republicans pushed back:”
A lot of this has to do with William Campbell the witness on the Uranium One scandal.
Yes, exactly. Campbell is who the Congressmen were trying to get Sessions to talk about, but he just started talking in circles and eventually shouting back at Jim Jordan who was pressing Sessions to appoint a special counsel since the DOJ can’t be trusted. Now we have this, which could be a good sign, but still isn’t the special prosecutor the committee has been asking for, which is fhe only way the previous (supposed) investigation conducted by Rosenstein and Mueller will ever get actually and objectively reviewed.