Tennessee lawmakers on Thursday approved legislation drastically expanding the number of families who can use taxpayer money on private schools regardless of income, a long-sought victory for Republican Gov.

The law, pushed by Gov. Bill Lee as an immigration enforcement measure, will also establish a new immigration czar and office in the state.

A key Republican senator Thursday said he was struggling with whether to support Robert F. Kennedy Jr.’s nomination to be head of the Health and Human Services Department, reflecting some of the widespread concerns lawmakers have as they approach Kennedy’s confirmation vote.