Someone in the US government was wiretapping all over the place, and the White House read all about it.
It doesn't matter that Comey at FBI denies he's doing it, or that the FISA court refused to allow wiretaps. Someone wiretapped Flynn during the transition, and Manafort during the campaign, which means at Trump Tower.
President Trump is not wrong.
The New York Times, February 13, 2017, here:
The White House had examined a transcript of a wiretapped conversation that Mr. Flynn had with Mr. Kislyak in December, according to administration officials. Mr. Flynn originally told Mr. Pence and others that the call was limited to small talk and holiday pleasantries.
But the conversation, according to officials who saw the transcript of the wiretap, also included a discussion about sanctions imposed on Russia after intelligence agencies determined that President Vladimir V. Putin’s government tried to interfere with the 2016 election on Mr. Trump’s behalf. Still, current and former administration officials familiar with the call said the transcript was ambiguous enough that Mr. Trump could have justified either firing or retaining Mr. Flynn. ...
Officials said classified information did not appear to have been discussed during the conversation between Mr. Flynn and the ambassador, which would have been a crime. The call was captured on a routine wiretap of diplomats’ calls, the officials said.
