Former US Attorney Boersch withdraws her candidacy for post of NABU auditor, MP Yehor Soboliev says Martha Ann Boersch, the former Attorney at Law at the United States Attorney's Office who prosecuted Ukraine’s ex-Prime Minister Pavlo Lazarenko, withdrew her candidacy for the post of the independent auditor of the National Anti-Corruption Bureau of Ukraine (NABU). 26 395 146 Ukrainian Politics