nullification

US /ˌnʌl.ə.fəˈkeɪ.ʃən/
UK /ˌnʌl.ə.fəˈkeɪ.ʃən/
1.

Aufhebung

the act of making a legal agreement or decision have no legal force:

:
•
Judges, and indeed lawyers, do not approve of the nullification of laws by juries.