MILWAUKEE (AP) -- U.S. Attorney Steven Biskupic will step down from his position as the federal prosecutor in Milwaukee.
The announcement expected Tuesday afternoon isn't surprising, as federal attorneys generally resign when a new president takes office.
President George W. Bush appointed Biskupic in 2002.
Biskupic's name arose last year as congressional investigators examined whether political motivations drove the firings of eight U.S. attorneys.
Biskupic has said he was told his name appeared on documents questioning his performance and loyalty to Bush.
Biskupic kept his job, but Democrats have questioned whether political pressure influenced his prosecution of a state worker whose conviction was later overturned for a lack of evidence.