Fani Willis suggests she won't testify in 'unlawful' Georgia Senate investigation

Fulton County, Georgia, District Attorney Fani Willis suggested the state Senate's investigation into her was "unlawful" and indicated she would not cooperate with a subpoena from them. 

"Well, first of all, I don't even think they have the authority to subpoena me, but they need to learn the law," Willis said after being asked if she would appear in front of a Georgia Senate committee without being required by a subpoena. 

When a reporter pressed her on it, asking "yes or no" if she would appear...