Trump has really good security people, right? I think they learned of the wiretapps practically when it happened and they have all of their (legal) ducks in a row.
This was an interesting read .......
http://www.nationalreview.com/article/443768/obama-fisa-trump-wiretap
If obama could get the IRS to target his opposition, my guess is that he could get the FBI and the CIA to do his dirty work too.
This makes sense, and I hope it's true.. And the timing in the reveal is good. Number 1, his own attorney general is in place, and it follows the Joint Congress speech which consolidated his power as President.