Trump tweeted Saturday that he had “just found out” that then-President Barack Obama had ordered a wiretap at Trump Tower during the 2016 campaign. That means conclusive evidence existed and had been presented to Trump about the wiretapping. There’s no other interpretation for the language in that tweet.
What Spicer is saying now is that Trump thinks the right thing to do is to have Congress investigate to find out whether wiretapping occurred.
But Trump already stated definitively that it had! Why does Congress need to investigate something the president of the United States already has evidence of?
.. In short: The White House is now pushing for investigations in search of the very evidence that Trump claimed he already possessed.