This is all I know from MSNBC website at the moment, but ..... sigh. Thanks to Roby Brock for the tip.
BREAKING NEWS: ATF says it disrupted skinhead plot in Tenn., Ark. to assassinate Obama.
UPDATE: We've dug up an account of the indictment on which this headline is apparently based. This may be the random nut incident -- which isn't to say it isn't unsettling. It involves an 18-year-old from West Helena and an indictment returned in Tennessee on Friday. They talked of a mass slaughter at a high school, too.
Here's a news release from Tennessee.
And here's the affidavit that supports the case.