It is rather dum for people to think that people can make America great again when people did not make it great the first time. The country became great in spite of people's bumbling antics.
People cannot 'make Amerika great'. Even if they had a clear and quantifiable definition of what the word 'great' mean they still could not do it. It would, of necessity, mean that they had to change a lot of other peoples minds. There are nasty words for that such as 'brainwashing'. People would object and start resisting, and the people doing it would loose their humanity by trying it.