TD is the only broker not opening new orders with ILIV. It's their prerogative to not trade it for now. As a TD customer, I can tell you that I've missed out on lots of buy opportunities on other tickers that rocketed right after, especially MJ plays.
TD did, however, allow me to purchase GN*P about three days before it hit .0001, and that ticker is ran by three known mining frauds.
It just goes to show that TD's interests aren't always in protecting their customers. They restrict and allow what drives profit, and that's it.