PORTLAND, Ore. (AP) -- An Oregon inmate and white separatist has been sentenced to four years in federal prison for mailing a letter from the Oregon State Penitentiary in which he threatened to kill President Barack Obama.
Federal prosecutors say 28-year-old David Earl Anderson mailed several letters from prison in which he threatened Obama. He pleaded guilty last October to one count of threatening the president.
A Secret Service investigation reportedly found no evidence to support Anderson's assertions about a group plot to kill Obama.
Anderson was sent to prison in August 2007 for identity theft and other charges. His defense lawyer has said the man also spent five years at the state mental hospital for "significant mental health issues."
On Wednesday, U.S. District Judge Anna Brown described Anderson as a mentally ill man who poses a threat to society until his impulses can be constrained.