They may both be out of office, but Bill Clinton remains the ultimate boogeyman for former Sen. Jesse Helms (search).

In a fund-raising letter for his senatorial library, Helms invokes the specter of the former president leading the United Nations after Kofi Annan (search) retires next year.

"I'm sure you might agree that putting a left-wing, undisciplined and ethically challenged former president of the United States into a position of such power would be a tragic mistake," wrote the 83-year-old Republican, who left office in 2003 after five terms.

The Associated Press obtained a copy of the letter Tuesday. It contains a petition asking President Bush to "rebuke all efforts by Hillary Clinton, John Kerry, and every other liberal in Congress to push for Bill Clinton to become Secretary-General of the United Nations."

A spokesman for Clinton did not respond to a call seeking comment. Clinton has said nothing publicly about wanting to lead the U.N.

The Jesse Helms Center in Wingate, 30 miles southeast of Charlotte, has a lecture series that has attracted speakers such as Secretary of State Condoleezza Rice and former British Prime Minister Margaret Thatcher (search). Its Web site describes it as a "nonpartisan organization" that promotes the principles espoused by Helms.