You can do it through YDX slack channel. Its the only legit way for US customers as of now. I can send it invite if you like..
Please send me an invite, new to this and see IOTA as something BIG !Much appreciated!
PM me your email
It worked for me this way.I purchased some IOTA last week
I thought anyone could open an account on Bitfinex without verification and send your BTC there to start trading. That's what I did for the first month. Or do they check your IP address whether it's from the US or not?
What is YDX? Our user community exchange?
It is an exchange on slack. PM me your email if you want an invitation.
Now IOTA also on www.binance.com