I think clear Loretta Lynch is involved in it. She meets Bill Clinton at an airport right around the time the FISA warrant is issued in October and has just posted a video promoting the protests against Trump at the time Trump reveals the wiretapping, so she can be a martyr if she is outed for this.
This all Russia bit was just an excuse to try to find dirt on Trump and get him to drop out, just as Obama has done in the past to political rivals while in Chicago.
Is the airport like an international trade zone or some such so there is a jurisdictional issue for criminal prosecution?