It appears that this will be the FBI’s new definition of rape:
Penetration, no matter how slight, of the vagina or anus with any body part or object, or oral penetration by a sex organ of another person, without the consent of the victim.
It’s a huge improvement over the current FBI definition, which excluded many female victims and all male victims of rape. But the FBI shouldn’t exclude “envelopment” rapes by female rapists from their definition. Female rapists are less common, but they exist, and there’s no legitimate reason not to count their crimes.