The "rule against surplusage": Where one reading of a statute would make one or more parts of the statute redundant and another reading would avoid the redundancy, the other reading is preferred.
"Judges frequently invoke anti-redundancy principles in the interpretation of legal language, whether it appears in classic private-law documents such as contracts or classic public law-documents such as constitutions and statutes."
Redundancy: When Law Repeats Itself, John M. Golden (2016)
https://en.wikipedia.org/wiki/Statutory_interpretation