Any legal problem for investing to ico as a US citizen?

[soultown]

I am a us citizen currently living in s.korea for a couple of years.

A thing that's been bothering me lately is that

1. Any legal problem if i purchase the ico tokens by sending the btc from Bithumb exchange to the ico website?
Will i be ok?


2. How about for US citizens living in the states and using vpn to invest into ico? any legal problem?


i'd appreciate for any response.