In interviews with more than 20 sources who have dealt with Lewandowski during his nearly year-long tenure with the Trump campaign and in his previous job with the Koch brothers-backed advocacy group Americans for Prosperity, complaints emerged about Lewandowski being rough with reporters and sexually suggestive with female journalists, while profanely berating conservative officials and co-workers he deemed to be challenging his authority…

A group of current and former high-ranking members of the campaign last month planned to deliver Trump a letter outlining concerns with Lewandowski’s management, according to multiple sources familiar with the planned mutiny. Complicating matters, the businessman is not directly reachable by email and frequently has Lewandowski at his side. So the plan was to deliver the letter in an envelope to Trump’s head of security, Keith Schiller, in the days between the South Carolina primary and the Nevada caucuses, with instructions to give it to Trump and no one else…

Sources tell POLITICO that Lewandowski unleashed a profanity-laced tirade towards the officials who organized this month’s Conservative Political Action Conference after they insisted that Trump ― like his presidential rivals ― field questions from a journalist of CPAC’s choosing after delivering his speech. The officials refused to yield, and the Trump campaign canceled his appearance entirely, though Lewandowski said the last-minute change of plans had nothing to do with the dispute.

And, separate from the incident with the Breitbart reporter Fields, other reporters who have covered the Trump campaign described instances in which Lewandowski was rough with journalists, using his body to push reporters away from the candidate. They described the former New Hampshire police officer as occasionally acting more like a security guard than a political operative.