Why Republicans Hate the Post Office

The Post Office has caved in on its attempted power play to bypass Congress and stop Saturday mail delivery. Atrios comments on the bigger picture:

I’ve been a bit puzzled by this one. I doubt Republicans really want to kill the post office. Or, at least, they would also miss it when it’s gone. They’re not always so good at understanding the consequences of their actions.

I have two words for you: labor unions. This represents the sum total of Republican animus toward the Postal Service. Any other questions?