White House official says Breitbart story was source of Trump's wiretaps claim

It came from Breitbart, which reprinted a claim from radio host Mark Levin. That was then picked up by the White House, and a staffer placed that piece in Trump’s daily reading pile, according to a White House official who wouldn’t speak publicly to the AP, citing a lack of willingness to talk about Trump’s private routine on the record. Trump reportedly read that story on Saturday, and then started to tweet.