article_snippet.sent: U.S. Attorney for the District of Columbia Ronald Machen (left) dropped U.S. Attorney for the District of Columbia Ronald Machen
article_snippet.sent: (left) bomb on Congress just one day before leaving office to return to private legal practice .
article_snippet.sent: Machen's March 31 letter arrived on Capitol Hill just a day before Machen resignation took effect after a five-year stint as Washington, D.C.'s top federal prosecutor inside the Justice Department.
article_snippet.sent: President Barack Obama named President Barack Obama to President Barack Obama post in December 2009.
highlights_snippet.sent: Federal prosecutor in charge of the case sent Federal prosecutor in charge of the case decision to Capitol Hill on the last day before Federal prosecutor in charge of the case own resignation took effect .
  