Richard Lugar: U.S. Senator Defends His Indiana Residency

Lugar needs to go, he's the quintessential example of a RINO.

Tea Party groups in Indiana have made him their No. 1 target, saying the silver-hailed senator has strayed from Republican principles too many times.

They are backing state Treasurer Richard Mourdock, creating Lugar's first Republican primary challenge since he took office.

Another complication: Lugar's startling revelation that he sold his home in Indianapolis and bought one outside Washington shortly after winning his first election to the Senate three decades ago.