WASHINGTON (AP) — Republican Rep. John Doolittle of California, who is under investigation in a congressional lobbying scandal, said Thursday that he'll retire from Congress at the end of his current term.

The development comes as Doolittle, in his ninth term, faced growing political pressure from fellow Republicans who considered him a liability because of his involvement, along with his wife, in the Jack Abramoff influence-peddling investigation. House Republicans, still smarting from losing control of Congress in 2006, are eager to put that ethics taint behind them.