Two, however, warned the evidence is inconclusive.
The wiretapping of Manafort, according to CNN, began in 2014 while he was the subject of an FBI investigation regarding political consulting work he did for the Ukrainian ruling party. That warrant eventually expired and nothing of note, or at least worthy of criminal charges, came up at the time so the surveillance was dropped. The surveillance was authorized by the court, in line with the Foreign Intelligence Surveillance Act (FISA).
It does not seem that Manafort was wiretapped while he served as Trump's campaign chairman. According to that report, "Manafort is under investigation for possible violations of tax laws, money-laundering prohibitions and requirements to disclose foreign lobbying".
Earlier this month, Trump's own Department of Justice admitted it could not back up the accusation.
The FBI conducted secret surveillance on Paul Manafort, who served as President Donald Trump's campaign chair, due to their concerns about his contacts with Russian operatives.
While Manafort keeps a residence at Trump Tower, there is still no evidence Trump himself was under surveillance.
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Although surveillance of Manafort is believed to have taken place both during the campaign and after Trump assumed office, no recordings of the meeting with Veselnitskaya - which has now become a part of the greater Russian Federation probe - have been found.
That warrant was discontinued but investigators received another one that extended into the beginning of this year after intercepted communications with suspected Russian operatives, the outlet said.
-What did Federal Bureau of Investigation agents find when, as part of the FISA warrant, they conducted a search of a storage facility belonging to Manafort earlier this year? In order for Mueller to obtain the warrant to search and enter Manafort's home unannounced, his team would have had to convince a judge not only that the home contained evidence of a crime, but that Manafort was likely to destroy evidence.
The president can complain all he wants about investigations of his associates.
The federal investigation team looking into Russian involvement in the US election led by Robert Mueller has been made aware of the communications, CNN reported. "Mr. Mueller has obtained a flurry of subpoenas to compel witnesses to testify before a grand jury, lawyers and witnesses say, sometimes before his prosecutors have taken the customary first step of interviewing them".