To live inside the walled paradise, you must be an American citizen who wants to pay for your own healthcare or health insurance with no help from the government, or to go without healthcare altogether. You must own a gun, because only good guys with guns can stop bad guys with guns. And you must be willing for everyone inside the wall to get any kind of weapon they wish to have. Don't worry - since everyone inside the wall will be a Trump supporter too, there won't be any bad guys to contend with. (Pssst - you can keep out people who aren't white, if you wish. I mean, you'll be armed. Heck, you can keep out anyone you don't like.)
Only thing is, you must stay inside the wall. Well, unless you change your mind and unaccountably want to have your guns regulated (or, in some cases, even confiscated) and be forced to buy health insurance. Insurance that would help your neighbor but might never help you! And you'd have to live with all those people you don't like. Some of them don't even speak English! Would you really want to do that?
I mean, look at the financial advantage of living inside your walled community. Treating gunshot wounds costs American hospitals some $2.8 billion a year. That adds up to a lot of insurance premiums. If you choose not to buy health insurance, you won't have to pay a dime of it! But anyway, since you'll all be armed, gunshot wounds won't be a problem. I mean, who would shoot an armed person, right?
And here's the best part - you won't have to pay for this paradise yourself. Tell those immigrant-loving, gun-hating, socialist-healthcare-promoting Democrats (and Republicans) that you'd like your own walled country, and they'll jump at the chance to build it for you!
And then, finally, you can make America - or at least your walled-off portion of it - great again.