I think a test is necessary for the survival of the Republic. Otherwise, these college kids of voting age will be able to shape the country:
https://www.facebook.com/salon/videos/10153420067871519/
Beware declinism, the usually-incorrect belief that a country or society is in a nose-dive from which they cannot pull up. Though it is from a few years ago, you may enjoy
this article. As I have aged (and don't get me wrong, I'm not exactly old and wise), I can feel a growing tendency to lift my cane and shake it in the general direction of the whipper snappers. This is entirely normal, as far as I can tell; the tendency to think that the good old days are gone, and everything is going to hell. And the feeling arises whether discussing "kids these days" or the functioning of our Republic.
But I actively fight against that. I do not think the default position should be a belief that the country is going to hell. After all, folks have been saying that for a century or more, and it has yet to come to fruition. So based on experience alone I think that is a poor conclusion to come to. Rather, I try to recognize that the world is changing, just as it always has, and as I get older, my ability to change with it is naturally in decline. So I must work diligently to understand the current world through the eyes of those who will continue to build it, rather than wholly through my own eyes or those of the folks who will soon leave it.
This is not to say that the older generations don't have fantastic input and wise advice. But I choose to believe the Republic is strong and not on its last legs, and work from that starting point. This is why I am wholly against drastic changes to fight against the "demise of the country". You may believe that the Republic will soon meet its demise. That's fine, as long as you understand there is a long line of people before you who believed the same and were proven wrong.