Here's a brief explanation of how websites can be blocked. When you use the internet, you have an ISP (internet service provider), kind of like a middle man. They allow you to connect to the world wide net, by setting up a link between you and them and then, to the internet. They do the technical stuff so you don't have to. So companies like comcast and verizon etc. Since they are where all your internet goes through, they see what you do. If you are a business, and let's say, you don't want people using your internet to connect to shady websites, you can tell your ISP to block traffic from certain websites, which is what happened for you. It doesn't matter what device you're on, you're basically still using the same connection/middle man.
This isn't something to worry about. It's basically up to the business and how they are setup with their ISP; sometimes, the businesses may not even know all the sites that are blocked, because ISPs have like packages you can buy which come with all the services you need blocked and then some. So this isn't something to be alarmed about, it's not like it's a sign that this website is in trouble. Just that some people go the extra mile to ensure sites like these are not easily accessible.
It's not that easy to just ban a website from an entire country. Especially, I would think in the USA because freedom is an important thing to most people, regardless of what their view is. There are a number of loops a bill has to go through before it's law so we could all be dead by the time it's even brought for presidential approval. Absolutely nothing to worry about. Even then, there's still VPNs you can use to access this site; a vpn is a way for you to hide your internet activity from your ISP so they don't see what you're doing and you can bypass any restrictions they set up. It's not as though being banned from the country means the site would be ceased by federal government.
I don't see this website so easily going down, regardless of the hate. There is also the Dark Web, a whole other deal. We could use that.
Point of all this is, you're worrying too much.