I largely agree with Pinkback.
Through other means I happen to know Justin Miller, and I can confirm that he does indeed have a very small number of pangolins in his possessions.
However, I think his claims are farcical. His baby is from a wild captured mother and was conceived in the wild, and both baby and mother will most likely be dead within the next year. As well, he is about as far from a conservation minded non-for profit as possible. He is a single importer that cares about profit, being able to tell stories of his "achievements", and collecting animals.
As for the pangolins, he has imported several over the years, all of them dying. How long these two will live, is anybodies guess (if I had to assume, this pregnant female is probably his last survivor from his most recent import), and going further, I would not at all be surprised to see them deceased shortly, as mentioned above. Most likely the mother will go first, and the baby soon after.
Edit: Also as for the actual importing, the animals are legally imported into the country in non-dis-crept brown crates. any importers import many strange species without anyone ever hear a word. For instance, there are a number of privately owned Patagonian Sea Lions in the US, but did you hear anything about their imports?
No.
Anyways, back to the point. He claims to be importing them to send to zoos(and zoos only) to create breeding partnerships/programs, however those animals never leave his possession. If they manage for survive for more than a week or two, he will hold onto them until they inevitably perish. Zoo my rear end!