No doubt about it. Too much of the New Deal is still around today. Phasing out Social Security and allowing people to be financially responsible for their own retirement is good social policy. As for the demise of the Republic, I disagree with you. I don't see it in the cards. There is no reason why the USA can't be here 100-200-500 or even 1000 years from now.
Maybe. But even under conservative Republican leadership, the federal government continues to expand in scope and authority, taking more and more of the available resources for government at all levels, and excercising more and more control over the states and local governments. There might still be a USA 200 years from now, but if the trend from 1940 to the present continues, by then the "States" part of it will be little more than a postal designation.