The dossier was compiled by veteran British spy Christopher Steele, who was hired to investigate Trump's ties to Russia by the Washington, DC - based opposition research firm Fusion GPS. (businessinsider.com)
The Free Beacon has a history of employing so - called opposition research firms to assist in news articles critical of targets like Mr. Trump and Mrs. Clinton. (nytimes.com)
He founded America Rising, the GOP opposition research firm, and is a former Republican National Committee deputy communications director. (politico.com)