In my opinion, the redefinition of rape that is occurring is not actually a textual redefinition. It's the fact that if we start saying that some rape gets abortion funding and some rape dosen't, it qualifies all of the latter as in some important (and totally non-legally-defined) way not "worth" the funding, because it's "not as bad." It's not redefining rape as "only the forcible kind." It's redefining rape as "a crime our country speaks out against only when it fits into some poorly-defined category." Given how difficult it has been to get legal definitions of rape into the books at all in some places, this is a major step backward that redefines the way the country legally thinks about rape as a crime.