31 C.F.R. § 583.410
Setoffs prohibited
A setoff against blocked property (including a blocked account), whether by a U.S. financial institution or other U.S. person, is a prohibited transfer under § 583.201 if effected after the effective date.
A setoff against blocked property (including a blocked account), whether by a U.S. financial institution or other U.S. person, is a prohibited transfer under § 583.201 if effected after the effective date.