Don't even bother! They know about that. I live in NYC and since I got here, there are plenty of RES babies sold in Chinatown.
There is regulation in this city but not for chinese ...They sell them/turtles like a piece of bread.Everybody who just find himself to walk their streets can see hundreds quater size turtles there. And anyone can buy one/or two-they give you a discount(!)And there is nothing you can do with that.