Steele compiled the controversial dossier that details President Trump's dealings with Russia.
Steele compiled the controversial dossier that details President Trump's dealings with Russia.

While former M16 agent Christopher Steele, who compiled the sometimes salacious Russian dossier on Donald Trump, rebuffed efforts by the Senate Intelligence Committee to get him to testify, he reportedly has met with members of Robert Mueller's investigative team.

“Regarding TRUMP's claimed minimal investment profile in Russia, a separate source with direct knowledge said this had not been for want of trying. TRUMP's previous efforts had included exploring the real estate sector in St Petersburg as well as Moscow,” read the dossier, which also pinned the hack of Democratic National Committee (DNC) emails on the Russian government, which allegedly handed them over to WikiLeaks.

Mueller team members traveled abroad to interview Steele, NBC News cited an unnamed sources as saying. Earlier in the week, Sen. Mark Warner, D-Va., and Sen. Robert Burr, R-Md., said that Steele hadn't acquiesced to their entreaties and without hearing from him, the lawmakers' ability to “decide the credibility" of the dossier was hampered.