Bah, I just hate it when I don't see a thread topic about which I have strong opinions until it's 15 pages in. By that time, all valid points have been made, all invalid points have been shredded, everyone I want to argue with is already arguing with someone else and the thread is usually irreparably hijacked.
I'm still going shove my opinion into the mix. Yes, I think that adding "forcible" to "rape" is going much too far, for reasons I'm sure have already been covered, but I'm going to re-cover 'em! As already noted in the OP, the term "forcible" is a fluid one, which doesn't lend itself to a concrete oranges-or-apples definition. Statuatory rape is not considered to be "forcible", even if the "consenting" child is 12 and the person she had sex with is 20-30 years old. So potentially with this new, improved definition, a 12-yr-old girl from a poor family could be forced to give birth despite the fact that she was legally unable to give consent and was, under the law, raped.
Now we come to date rape. (No, it's not limited to promiscuous, bar-hoppers with morning-after remorse.) Most date rapes occur in high school and college. Most victims are vulnerable adolescents who do not yet have the experience to size up potentially dangerous situations... i.e. getting crazy drunk at a frat party, then trying to weakly fend off an equally drunken kid(s) who will not take "no" for an answer. Was she raped? Yeah. She said "no", and she was legally impaired, unable to give consent. These things never go well for the female, since both were drunk and it's he-said, she-said, so there's no chance of a prosecution. If she becomes pregnant, she has no way of proving she was forced.
High school kids end up in the same situation. Dewy-eyed girl accepts date with the school heartthrob, only to find herself pinned in the front seat and overpowered. Again, he-said she-said date rape, impossible to prosecute, impossible to prove.
The fact is that unless a woman has been visibly beaten, and badly so, she has almost no legal way of proving she was forced, since the male will insist she consented, and reasonable doubt is born. So by simply adding the word "forcible", all of these scenarios would be automatically exempted from abortion funding.
As for the "morning after" pill, most rape victims will use this if it's available. Thing is, it's only available through prescription, which means the cost of a doctor visit AND the cost of the medication. Many young victims simply cannot afford this. If they report the rape, the hospital will provide the pill for them... but this means the female will be subjected to embarrassing police questions, the accused will be questioned as well, everyone in the school/college will know what happened, the D.A. will eventually decline to prosecute, and the female will be left with the option of facing the wrath of the accused and his friends, or dropping out of school
I detailed all these scenarios to show why most rapes aren't even reported, and why "forcible" rape is an impossible standard to prove unless the woman has been beaten within an inch of her life. Rape is traumatizing to women. I don't think a lot of men get this. Being impregnated during a rape is enough to drive some women to despair. There should never, ever be a legal impediment to providing a raped woman with a federally-funded abortion.