Okay, here we go again with that pesky CPSIA, and the way I understand its confusing descriptions.
In a nutshell, 12 and under, it pretty much banned lead, which really wasn't common for a long time in our inks anyway.
3 and under is where it got fuzzy with "sleepwear" and phthalates but most modern plastisols went this route across the board as well.
I'd be more concerned with puff inks possibly being more likely to flake off if chewed, or even after normal wear and tear and numerous launderings.