Congress is considering better background checks for teachers. Why won’t unions support the bill?

Campbell Brown:

When a Michigan middle-school teacher was denied $10,000 in severance pay last month, the local teachers union filed a grievance against the school board on his behalf. Given the union’s mission to defend the rights of educators, this would appear to be routine. Not so fast: The teacher is a convicted sex offender.
Neal Erickson was sentenced in July to a 15- to 30-year jail term after acknowledging that he had sexual relations with a male student beginning when the boy was 14 years old. The school board denied him severance once he was charged. But the local chapter of the National Education Association thinks this criminal deserves his severance, which says a lot about the mindset of teachers unions, which are also trying to weaken a bipartisan bill in Washington that would help keep sexual predators out of schools.