President Donald Trump confirmed to a reporter on Thursday that Lieberman was a finalist.
Trump clearly knew what he wanted to say as he took a few questions at a news briefing with visiting Colombian President Juan Manuel Santos.
Lieberman, who retired from the Senate in 2013, now works at the same law firm as longtime Trump lawyer Marc Kasowitz.
Lieberman's front-running status, first reported by Politico, followed the former senator's Wednesday meeting with Trump. He also has said he could name a candidate by the end of the week, before he departs Friday afternoon on his first overseas trip as president. Sherrod Brown, D-Ohio, went on a long disquisition about his many problems with Lieberman, including his undermining of former president Barack Obama's nuclear deal with Iran. Lieberman's Senate replacement, Chris Murphy, said that despite his history of "angering Democrats and Republicans, which is probably a good experience for being Federal Bureau of Investigation director", his "political background" taints him for life. Comey was overseeing the FBI's investigation into Russia's role in the presidential election, including ties between Russian government officials and Trump associates.
House Republicans have mixed reactions to the surprise announcement that the Justice Department has appointed former FBI Director Robert Mueller as a special counsel to oversee a federal investigation into possible collusion between Russian Federation and the Trump campaign in 2016.
Lieberman, who was the 2000 Democratic vice presidential nominee before losing a primary bid for re-election and becoming an independent, would be an unconventional choice.
Lieberman, 75, a Democrat who became an independent in 2006, met with the president Wednesday.
Trump and Sessions also interviewed former Oklahoma Gov. A late and somewhat unlikely addition to Trump's short list, Lieberman is nonetheless the sudden frontrunner.
Lieberman has run for a number of political jobs, including, unsuccessfully, president of the United States.
In reality, Lieberman's critics really mean they want a Democrat who will give backroom promises that he'll devote most of attention to contrived conspiracies and scandals against the Trump administration.
Lieberman served as Connecticut's US senator for 24 years, retiring in 2013. Lieberman appeared with DeVos at her Senate hearing, even introducing her with words of praise. Frank Keating, a Republican, and former Sen.
In recent testimony before Congress, Mr. McCabe rejected the White House criticism that rank-and-file agents had lost faith in Mr. Comey.
Joe Lieberman is also raising eyebrows as a proponent of criminal investigations of media outlets that publish classified information stemming from illegal hacking.