This guy is nothing if not persistent. He's been making these threats, going to jail for them, and then making more of them for years, but this time he was stopped at the White House gate, which is just a little too close for comfort.

Via TPM:

Archie Monroe Glass, Jr. was charged in 2008 for threats against Obama and Bush and was sentenced to federal prison for five years, the television station reported. He was in a halfway house and not supposed to leave Oklahoma without permission, according to the NBC affiliate.

In 2008, Glass sent a letter from El Reno, Oklahoma, the site of the same prison Obama happened to visit this summer. The letter read: “Mr. President, I’m going to murder you very soon by shooting you in the head and will do the very same thing to the winner of the November Presidential election,” according to WRC.

Glass was at a halfway house during Obama's visit, the station reported. Glass has served a sentence for threatening to kill former President Clinton and former Secretary of State Hillary Clinton, the station reported.

NBC Washington says he has mental health issues.

Glass has a mental health condition, court records show. He made similar threats in the 1990s and was imprisoned previously for the same crime, appeals court records reviewed by the I-Team show.

Federal court records show Glass was also charged in 1996, 2001 and 2002 with threatening to assassinate a president. None of the available court records reference any firearms or violent actions by Glass.

In the 1996 case, a witness said Glass "wanted to get in the history books like Hinckley [sic] and wanted to shoot Bill Clinton and Hilary [sic]."
Federal prosecutors, in newly filed court records, said Glass also appears to have visited Washington in mid-May.

Their court filings said, “U.S. Marshals recovered a bus ticket showing that Mr. Glass departed from Oklahoma City on May 18 and arrived in Washington DC on May 20.” Prosecutors said Glass admitted to visiting Washington when questioned. He unlawfully left a halfway house in which he was being held to make the trip, according to court records.