Its no secret March of Dimes has been giving to Planned Parenthood for decades at least since the early 90’s when I became aware.
newspaper article 1995:
March of Dimes gives to Planned parenthood
George Grant, in his mid 80s book, Grand Illusions: The Legacy of Planned Parenthood, wrote about the then tight connection tween MoD & PP.
Grant also highlighted how the MoD's emphasis on amniocentesis was essentially a "search and destroy" mission...that the way to "root out" the disabled was to find them in the womb & kill 'em off.
After all, before prenatal surgeries became common, any disabilities uncovered in the womb in the 80s and 90s didn't lend themselves to any healing of those disabilities within the womb. (And it's still true with most early disabilities today) So the implied "what you do with a disability discovery" was to abort.