OK... let's play a game.
When will XMR hit 1Kusd for the first time.
I'm going to guess Jan 2019.
Hmm tough to say, maybe 18-24 months.
But if its banned by the US government before that time then I can't see it ever hitting anywhere near those heights.
That'd be a huge amount of free marketing if monero were banned - although I'm only trading XMR on US based exchanges right now =) I'll have to fix that