Section 237(a)(2)(A)(ii) of the INA, 8 U.S.C. § 1227(a)(2)(A)(ii),
provides:

“Any alien who at any time after admission is convicted of two or more crimes involving moral turpitude, not arising out of a single scheme of criminal misconduct, regardless of whether confined therefor and regardless of whether the convictions were in a single trial, is deportable.”

INA §237(a)(2)(A)(ii) [full statute]

When are two convictions arising out of a single scheme?

See article on “arising out of a single scheme“.