Which regulatory action is specifically mentioned as a method to slow the moth's spread between major population centers in North America?

Answer

Quarantines imposed by federal and state agencies

Regulatory actions such as quarantines imposed by federal and state agencies aim to slow down the rate at which the pest moves between major population centers, especially by restricting movement of nursery stock.

Which regulatory action is specifically mentioned as a method to slow the moth's spread between major population centers in North America?
rarityinsectmothTreepest