The IRS released a warning about ICO's on July 25th, saying they may be illegal to participate in, also if you try to by ICO EOS tokens on EOS.io they specifically say US based residents are forbidden from participating. If they find out someone else bought them for you or you used a VPN they will report you.... There is a lot of grey area here.... Hope Im wrong but be careful
Ive also heard Dan Larimer mention it is a couple of interviews. We can pick them up on secondary markets but when you go to register them and are based in the US, might run into problems or have to lie....