He also promised to take a principled stand against torture and to close Guantanomo, and restore due process; before being elected.
Since being elected, none of those things have happened, and he has come out in favour of assassinating US Citizens living abroad without any judicial process whatsoever (The Al-Awliki case).
So the failure of Obama to publicly condemn Lieberman's petty campaign of censorship and crude threats against Amazon is not at all surprising.
And then under his administration there was the trial of Omar Khadr. Khadr is a Canadian who was 15 when he was captured in Afghanistan and brought to Guantanamo Bay, tortured and held until this year, when he was sentenced to 40 years in prison, because he apparently killed an American soldier, and because he confessed, even though the confession had been taken under the torture. They convicted a soldier for killing another soldier on the field of combat. And he was a child.
Bush was already under pressure from the Army to return to the previous standards, but Obama has not articulated a clear and government wide "no-torture" policy; nor has he brought the US into compliance with it's obligations under the Geneva Conventions.
And "trying to close Guantanamo"? Please. Do or do not, there is no try.
Guantanamo is in a half-state because Congress invoked NIMBY with the attempts to prosecute detainees in the US. No other country wants to take them in.
To be (slightly) fair, the assassination policy was created by the Bush administration and merely carried forwards (like so many Bush administration policies). Although I agree he's done zero to stop torture, and backpedaled on his "promises" to close Gitmo and end the war in Iraq.
So the failure of Obama to publicly condemn Lieberman's petty campaign of censorship and crude threats against Amazon is not at all surprising.