Our favorite line in Len Burman's Washington Post op-ed on why unions should embrace a cap on the amount of health insurance that could be tax free:

If employers replace Cadillac health plans with Chevy plans, their employees might be able to afford other useful stuff, like Chevy automobiles.

It's an elegant piece so go read it, but the gist of his argument is that unions have sacrified wages for really big tax-protected health benefits, when they'd really be better off with more cash in their pocket. And probably more job security -- to say nothing of what it could mean for General Motors...