The President has no control over who votes or what their "qualifications" are.
Philosophically, it makes great sense to pre-qualify voters in any number of ways. Are they intelligent enough to understand the issues, the positions they are voting for, the positions of the candidates on the major issues of the day? Surely, these are relevant questions. Do they pay any taxes? What organization allows decisions to be made by people who don't pay their dues?
Are they biased? In this most recent election, millions and millions of women voted for candidates merely because they were women. Blacks usually support black candidates by at least 95%, unless it's a Republican. Jews vote for jews. Muslims vote for Muslims. Catholics used to vote for Catholics. Are these rational, valuable votes? Hardly.
There is a reason why the Founding Fathers left basically NOTHING to the popular vote. The state legislatures elected senators. The Electoral College elected the President. The only thing the People could vote for was their representative in the HR, and THAT REPRESENTATIVE cast all the meaningful votes on government actions.
Starting with the elimination of "literacy tests" in the South because they often prevented "Negros" from voting, the ACLU and its subversive fellow travelers have eliminated just about every voter qualification imaginable, so that idiots, fools, dullards, slackers, know-nothings, and human lemmings carry the same power as voters as the most educated or accomplished person in the country. Motor-voter, same day registration, and other such initiatives promote the same mindless objectives - getting ignorant, gullible people to the poles.
A local radio station here in Pittsburgh used to conduct "man in the street" interviews regularly before every election, with results that were tragic-comical - every time. The people interviewed at random were almost always uninformed, stupid, and inarticulate, and yet most of them were determined to vote. Their perception of the issues was usually factually incorrect, their perception of the positions of the candidates was often 180 degrees out of touch with reality, and their knowledge of exactly what powers the elected officials had was always incorrect. And I'm not talking about political opinions; I'm talking about knowledge of, for example, what a President's powers or a legislator's powers were.
It is a travesty.
In my opinion, the worst campaigns in the world are "get out the vote" campaigns. These efforts induce people at the margins who otherwise wouldn't bother, to vote. Again, it is getting the most gullible people to the polls. It is a disgrace, and it ALWAYS favors Democrats.