I don't know that this has any political affiliation at all...
It seems to be blasting the Left's pro-abortion and the Right's pro-war at the same time.
Regardless, I don't really think this was done by some right winger.
It is just poking fun at the quagmire in Iraq, suggesting you unborn baby might already have to be ready for war..... Thus hinting even "IF" your baby is not aborted it will most likely be forced to serve in Iraq.