A spokeswoman for President-elect Barack ObamaBarack ObamaSpicer: Trump is 'very confident that he will be vindicated' on surveillance claims Bush DHS secretary: 'Vladimir Putin is winning' Trump ally calls for US to roll back climate commitment MORE confirmed that Obama is open to having Sen. Joe Lieberman (I-Conn.) caucus with Senate Democrats, even though Lieberman campaigned vigorously against him.

"President-elect Obama looks forward to working with anyone to move the country forward," Stephanie Cutter wrote in an e-mail to TalkingPointsMemo. "We'd be happy to have Sen. Lieberman caucus with the Democrats. We don't hold any grudges."

Lieberman's support for the Iraq war and Sen. John McCain (R-Ariz.) has made him a bete noire of liberal Democrats. Bloggers have called for him to be removed from the chairmanship of the Senate Homeland Security Committee.

But Cutter said that Obama wouldn't get involved in whether Lieberman keeps his post.

"We aren't going to referee decisions about who should or should not be a committee chair," Cutter wrote in the e-mail to TPM.