(CNN)-- Sen. Joe Lieberman is crossing party lines and endorsing Republican Sen. John McCain for president. "Being a Republican is important. Being a Democrat is important. But you know what's ...

Joe Lieberman ... said of the Republican president. In 1991, rather than join most Democrats to oppose the use of force after Saddam Hussein’s invasion of Kuwait, Lieberman became the lead ...

A lifelong Democrat who later ran ... in American politics have come as close as Joe Lieberman to serving as Vice President in both Democratic and Republican administrations.

Joe Lieberman’s new book about observing ... ranging from 16th-century Safed to tension-soaked Republican and Democratic back rooms, Lieberman makes the case for a structured day of rest that ...