WASHINGTON -- One of the U.S. senators allegedly targeted by an Army unit using psychological operations to help get more money and troops for the Afghanistan war says he doesn't believe he's been "brainwashed."

Independent Sen. Joe Lieberman of Connecticut tells CNN's "State of the Union" that he was supporting money and troop levels in Afghanistan long before the Army unit is reported to have begun its operations.

Rolling Stone's website reported last week that the Army unit was told to manipulate senators and other visiting officials. The story has led the top U.S. commander in Afghanistan to order an investigation.

Lieberman says he doesn't think there's much to the story and calls it "weird."