herbalifeAlan Hoffman senior VP-global public policy at PepsiCo and one-time deputy chief of staff to Vice President Joe Biden, will join Herbalife on August 25.

He'll take command of corporate communications, policy, governmental affairs, community relations and philanthropy at the Los Angeles-based company, which is under siege.

The Federal Trade Commission is investigating charges that Herbalife is running a pyramid scheme. The company also is being hounded by a high-profile battle with billionaire hedge fund operator Bill Ackman.

Hoffman is a former Justice Dept. attorney who worked for Biden, when he was Delaware's Senator.

With Biden's move to the VP slot, Hoffman doubled as deputy assistant to President Obama in charge of congressional/political/intergovernmental affairs, operations and public engagement.

At Herbalife, he takes the newly created executive VP for global corporate affairs post and reports to CEO Michael Johnson.

Meanwhile, Barbara Henderson is retiring as senior VP-global corporate communications. She announced last year her plan to step down.