Lieberman Leaves GOP Door Open

WASHINGTON -- Four days after calling his party affiliation a "closed issue," U.S. Sen. Joseph I. Lieberman said Sunday he was "not ruling it out" that he could turn Republican.

He told NBC's "Meet the Press" he will return to Washington as an "Independent Democrat" - "capital I, capital D."

But the R is lurking.

"I'm not ruling it out,"