Gov. Bruce Rauner on Sunday vetoed legislation that would have raised the minimum salary for an Illinois teacher to $40,000 within five years, putting the re-election-seeking Republican at odds with teachers unions once again. The bill approved by lawmakers in the spring would make the minimum teacher salary for next school year $32,076. The number would rise to $40,000 for the 2022-23 term and grow with the Consumer Price Index after that.