i still can't find what they were tainted with.
They weren't "tainted" in the sense you are using.
I'll briefly summarize the allegations.
(all allegedly)
-USPLabs along with SK Labs conspired (two or more parties working together to commit a crime) to commit fraud by requesting that their supplier create a fake COA for their synthetic DMAA, claiming it to be a natural extract. Fraudulently labeled imports are a big no-no.
-They then conspired to commit further fraud by then manufacturing and promoting fraudulently labeled supplements claiming that their ingredient was a natural extract and not the synthetic ingredient it actually is. This is mail fraud and wire fraud, both very broadly defined crimes that are applicable to basically any interstate commerce indictment.
-They committed further import fraud by requesting numerous synthetic ingredients to experiment with, and requesting that their supplier again fake labels for these ingredients claiming them to be green coffee extract.
-They again fraudulently marketed products as containing Aegle Marmelos extract when they actually contained synthetic aegeline.
-They could not get an extract of cynanthum auriculatum that they wanted, so they ordered pulverized roots instead, again fraudulently mislabeled and marketed.
-They were aware of the potential hepatotoxicity of cynanthum auriculatum, but believed that they were using little enough to not cause issues.
-When it came out that they were indeed using enough to cause liver issues in users, they played smoke and mirrors with the FDA, and tried to push as much of their inventory out the door as they could before it could be seized, putting further live(r)s at risk.
-Associated with all of this, they laundered money (Basically broadly defined crime for moving money out of a criminal enterprise) through various shell businesses and into the personal investment accounts of the principles at USPLabs.