A US man has pleaded guilty to charges that he plotted to kill then-senator Barack Obama and dozens of other black people in 2008.

A white supremacist charged with plotting to kill US president-elect Barack Obama wants his indictment dismissed, arguing that the federal grand jury which charged him had too many black members.

A US federal grand jury in Memphis, Tennessee, has indicted two white supremacists accused of plotting to kill US President-elect Barack Obama and dozens of other black people.

SHADES of the US South’s racist past came creeping back this week just as the South could be poised to play a pivotal role in electing the nation’s first black president.

US agents have broken up a plot to assassinate Democratic presidential candidate Barack Obama and shoot or decapitate 102 black people in a murder spree in the state of Tennessee.