I have tried to find a similar topic and wondering how this news was missed in the forum. 650 US banks will open Bitcoin purchases, I think it's not a small adaption if it happens really. Most probably that service will be provided by NCR banks, users will be able to purchase Bitcoin through NCR’s 800,000 ATMs as well. But surprisingly I notice Bitcoin's price drop after this news (Lol). However, I think this step will make it easier to trade Bitcoin for US citizens.
Please read the news source for more details:
$6 Billion NCR Opens Bitcoin Purchases To 650 Banks And Credit Unionsyes you are right, this step will make it easier for US citizens to buy bitcoins legally. As for the recent decline, I think the impact of the negative news about China's ban is still there. that's why the price of btc has decreased. but apart from that, I see the market is doing better than last month.