The difference between heroin and crystal meth is that in fact heroin has to be imported or grown. It's not something that can be produced from legal products. Crystal meth is unique. It's maybe not the only drug in the world of its kind, but it's unique from other drugs in that it doesn't have to be imported or grown.
There are opportunities for law enforcement organizations to combat the importation of illegal drugs or to stop the grow operations. But basically what we don't have with crystal meth is that opportunity to nip this in the bud. So whereas the police have the opportunity to go into a grow operation and shut it down before it becomes a drug, they don't have that opportunity with crystal meth.
This is giving them, effectively, the same tools as they have for other drugs in stopping the importation or the growth of those drugs.