Years ago (15 years to be exact) when clen first got poular with bodybuilders, I called customs and spoke to an officer about importing clen.
He told me he would talk to me for a few minutes about it.
He said it is not illegal to possess it here, but if caught by cutoms they will snag it since it is not an approved FDA drug.
They feel there is more than eneough bronchitis medicine already and no need for more.
So that is the story I got.
As far as HCG , as long as you get a 90 day supply or less it is totally legal since it is a non-scheduled , but approved drug in the usa.
You can legally import clomid, nolvadex, HCG, Arimidex , all the anti-E's for the most part . You used to be able to even import GHB up until about 10 years ago in most states.
I had customs open GHB at the time, it said GHB right on it, and they let it through.
I am pretty sure GH is also legal to import a personal supply.