Selling donated fetal tissue is not illegal.
Here is a good link again to read more about what the issue is
https://www.factcheck.org/2015/07/unspinning-the-planned-parenthood-video/
The argument is whether they are making a profit and whether they are selling fetal parts without them being donated or not. Its has now become very clear that what they are doing is not illegal. The unedited version has made that clear. The edited versions made it seem like they were talking about different things.
The argument has now shifted to how they talk about these issues. They talk very blunt and in a way that bothers people about dead fetus matter. This is not illegal but some are questioning their morality because of it. They talk about these issues the same way a medical personal talk about living or deceased humans as well.
Personally I think they should talk in a direct and correct terminology for what they are doing, but others here disagree. Its kind of like people who dont use correct names of body parts with their own kids because it makes them uncomfortable but ultimately it is better for the kids to hear the correct body parts and know what their function is.