In January 2017, Igor Danchenko, a primary source for the Steele dossier, told FBI officials in a debriefing that one of his sources for derogatory information about Donald Trump’s alleged ties to Russia was merely an anonymous voice on the other end of a phone call that lasted 10-15 minutes. The voice, Danchenko claimed, was someone he assumed to be Sergei Millian, an immigrant from Belarus, president and founder of an organization called the Russian-American Chamber of Commerce. As thin as that sourcing sounds, the truth appears to be worse. According to a new criminal indictment, Danchenko lied to FBI...