It's a 30+ year old law. The internet became a great way to get around it very easily, but don't get indignant because they finally found it worth it/found a method to enforce it. Don't be mad it's gone, be thankful we ever had the chance to so easily commit felonies with such a small chance of being caught, and almost 0 repercussions in the extremely unlikely event of being caught.
It was a good ride, fun while it lasted, but that ride is over now. You can still import and possess perfectly legal >5mW lasers in the US, just not ones that are illegal to import. Be thankful the US isn't like Australia yet: we can still own lasers, there is no federal law against ownership and usage, and it is actually very easy to legally import handheld lasers of whatever power you want in a pointer.
OP: There are perfectly legal lasers that you can order over the internet and have shipped to the US, from 1mW to 600mW, they are all available in handhelds. They aren't as cheap as DX was, but they are out there.