A former official at the US State Department and associate of Arizona Senator John McCain officially invoked the fifth amendment and refuses to speak with the House Intelligence Committee’s probe into the infamous ‘Trump Dossier;’ reports Fox News.

David Kramer -a key figure behind Christopher Steele’s debunked dossier- refuses to speak with Congressional investigators over his role in handing the shady document to the FBI back in 2016.

Rep. Devin Nunes has been struggling for weeks to determine if the dossier was used to obtain FISA warrants against the Trump campaign to surveil the team in the run-up to Inauguration Day.

According to inside sources, the former State Dept. official was issued a subpoena to appear before Rep. Nunes’ Committee in mid-January but has yet to appear.

A “law enforcement source confirmed, however, that Kramer did not appear and has exercised his Fifth Amendment rights,” confirms Fox.

Kramer’s refusal to speak with Congressional investigators over his relationship with former British spy Christopher Steele raises serious legal and ethical questions over the FBI and State Department’s role in creating and promoting the anti-Trump dossier.