Except that it’s been illegal for a president to order electronic surveillance of a US citizen since Nixon resigned. The only the DoJ/FBI or another law enforcement agency can do that, and in order to do that they have to get a warrant from the FISA Court.
As for Obama not knowing about it, the FBI does not inform ANY president of on-going investigations.They usually don’t say anything until they arrest their target. Now, we know that the intelligence community went to Obama AFTER they’d found evidence showing contact between the Russians and some of Trumps cohorts, but Ryan and McConnell told Obama that if he went public, THEY would accuse him of attempting to upset the election.
Did you notice that the Director of the FBI, Comey, went on record to say that this “wire-tapp” DID NOT HAPPEN?
Trump’s nuttier than a fruitcake.