You'd think the meaning is pretty clear, but given the way the Supremes these days like to play, one could argue that it is illegal to elect a President for a third term, but there is nothing here to prevent appointing him. Though the Constitution elsewhere sets age and citizenship criteria for who can be the President, this amendment addresses only the issue of election. You'd think after all those years the writers of amendments would do a little better on ambiguous language, but no joy here. So since, technically, the VP is not elected to the Presidency, an ex-President could run for VP, the elected President step down, and the VP would then be appointed. Or, a House Speaker could be appointed if otherwise deemed eligible. Since it is not 100 percent obvious that a House Speaker even needs to be a Representative, a Supreme Court that (in theory only of course) was stuffed with venal, corrupt toadies could find it legal for a dummy President and Vice President to step down, and be replaced by a Speaker who was never elected to the House. This is of course preposterous and would never happen because we all know that preposterous things never happen. And it is actually unlikely. What actually happens will probably surprise us.