http://www.cnn.com/2017/10/18/politics/fusion-gps-partners-plead-fifth-before-house-intel/index.html (very fake news)
The Dem sponsored "research" firm Fusion GPS, which produced the now-debunked Steele Dossier (pissgate). The firm has come under scrutiny after Congress learned that they dossier was purchased from active KGB-agents, and lawmakers want to understand more about the source of funds Fusion GPS used to purchase the dossier.
Nunes (R) subpoena'd the partners last week, though the top-ranking Democrat on the committee opposed the subpoena's. Instead of cooperating with lawmakers, the partners elected to invoke their 5th amendment rights, and refused to answer any questions.
Why is Fusion GPS refusing to cooperate with the Russian investigation? Obviously they feel they may be incriminated by answering some of the questions, so what are they hiding?