In arguing that Speech and Debate would protect her even if there were no evidence to support the criminal referral Barry Loudermilk made against her, Liz Cheney suggested that that same Speech and Debate protection is the one thing that protects him from a defamation claim. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.