The 51-year-old Fulton County district attorney will need that kind of tenacity if she decides to bring criminal charges against Trump, who is seeking the 2024 Republican presidential nomination.
Willis, a Democrat, has taken an aggressive approach in the Trump investigation, subpoenaing some of his allies including Republican U.S.
"It doesn't matter if you're rich, poor, Black, white, Democrat or Republican," Willis, who is Black, told CNN last year.
Trump, who in November announced another run for the presidency in 2024, has denied wrongdoing and has called Willis a "Radical Left Prosecutor."
To assist with the Trump investigation, Willis retained private Atlanta lawyer John Floyd, who wrote a guide on prosecuting state racketeering charges and worked with Willis on the teacher case.