The American Council of Life Insurers, Washington, and Greg Jenner, executive vice president, taxes and retirement security, for the last 18 months, have severed ties.

An ACLI official confirmed that Jenner was no longer with the ACLI as of Oct. 2, but declined further comment.

The ACLI did release a statement saying that Ann Cammack, ACLI senior vice president, taxes and retirement security, would “assume Mr. Jenner’s responsibilities.”

Jenner declined comment when reached at home in suburban Virginia. “I have nothing to discuss about my departure from the ACLI,” Jenner said.

A top official at an ACLI member company conceded that Jenner had been regarded as “having enormous stature” when he joined the ACLI. “We were delighted when he arrived,” the company official said.

The official noted that Jenner and Ms. Cammack “were equally talented people.”

Regarding Jenner, the company official said that “he brought a great deal of credibility to the ACLI in a core area of industry interest.”

Jenner has served as acting assistant secretary for tax policy from February through December 2004 and had been nominated by President Bush to be assistant secretary of the Treasury before joining the ACLI in May 2005.

Jenner had served as deputy assistant secretary of the Treasury for tax policy since 2002 before assuming the assistant’s role.

The statement said that Ms. Cammack “has a wide range of tax experience,” noting that she had served as a partner at Sutherland Asbill & Brennan LLP in Washington, D.C., where she represented clients before the IRS National Office, U.S. Treasury Department and Congress on tax issues affecting insurance products and companies.

The statement also said that Ms. Cammack served as an attorney-advisor for Treasury’s Office of Tax Policy, focusing on insurance tax issues. In addition, she worked as an attorney-advisor in the Office of the Chief Counsel, IRS.

“Keep in mind that ACLI has a strong internal tax staff fully equipped to handle industry tax issues, as well as outside counsels, including former Treasury Tax Policy Assistant Secretary Pam Olson, to assist us on the wide range of tax matters facing life insurers,” the statement said.