Meanings of nullify state in English

Pompeo, backed by powerful food and agriculture companies, recently introduced legislation to nullify state efforts to require labeling on foods made from genetically modified crops.

Pompeo, backed by powerful food and agriculture companies, has introduced legislation to nullify state efforts to require labeling on foods made from genetically modified crops.

Force must be applied by the nullifying State to resist its execution-

The legislation would mandate consistent labeling of non-GMO and GMO foods, while nullifying state laws not identical to the federal law.