Rep. Darrell Issa told Fox Business that an impeachment effort and taking away Donald Trump's Twitter account were like "kicking him when he's down."
The senator tweeted about the U.S. response to a breach of the U.S. embassy in Baghdad.
The former Republican congressman hammered the Obama administration for refusing to cooperate with Congress.
As a congressman, Mike Pompeo was aggressive in accusing the Obama administration of negligence and a cover-up around the 2012 terrorist attack.
A jury acquitted Ahmed Abu Khatallah of all but four charges in connection with a 2012 attack on a U.S. diplomatic compound in Benghazi, Libya.
Federal prosecutors argued Ahmed Abu Khatallah "hates America," is "guilty as sin" and is a "stone-cold terrorist."
U.S. Ambassador Christopher Stevens and three other Americans were killed in the 2012 attack.
Saif al-Islam's whereabouts are unclear.