What does MAGA MAGA mean?

Could you please elaborate on the meaning of "MAGA MAGA"? I've heard this phrase used in political contexts, but I'm not entirely clear on its significance. Is it an acronym or an abbreviation? And what does it stand for? Additionally, what are the origins of this phrase, and how has it been used in recent times? I'm interested in gaining a deeper understanding of its meaning and significance in the political sphere.