A top adviser to Donald Trump resigned Monday after sending a mocking tweet about newly-fired campaign manager Corey Lewandowski.<br />Michael Caputo, a Trump adviser and head of communications for Trump’s caucus operations team, tweeted “Ding Dong the witch is dead” following the news of Lewandowski’s firing.<br />"I regret sending out a tweet today alluding to the firing of Corey Lewandowski.<br />In hindsight, that was too exuberant a reaction to this personnel move.<br />I know this is a distraction from the kind of campaign you want to run, so I'm resigning my position as director of communications for caucus operations at the 2016 Republican Convention.<br />Let's make this immediate," Caputo wrote in a letter to campaign chairman Paul Manafort and Rick Gates, according to a copy obtained by CNN.<br />Caputo also said he deeply respects Trump as well as Manafort and Gates.
