Under the Federal Rules of Evidence, if party wants to qualify a witness as an expert then they will look to FRE 702. The federal court will apply what is known as the Daubert standard to determine if the expert qualifies. For a discussion on the Daubert standard vs. the Frye standard and South Carolina, click here (Professor Colin Miller gives explanation of the difference and how SC applies SCRE 702).
So what standard does South Carolina follow?
State v. Warner, No. 2017-001313, 2020 WL 1696716, at *3 (S.C. Ct. App. Apr. 8, 2020)