I think you’ve got some brilliant ideas already and I’ll try to give my best advice considering I didn’t finish im the EPQ.
First don’t worry if your EPQ project is not 100% specific enough yet because it’s a long-term project and the more you learn about your topic the more specific it will be.
EPQ Idea 1 - that sounds really interesting and it should be fine in terms of not overlapping with the syllabus bevause as far as I’m aware for a level politics you touch on issues of representation in the American government (but you don’t study it in depth). But I don’t take a level politics so I can’t say for sure. In any case ask your EPQ advisor and politics tacher for advice
EPQ 2 - that could definitely work, and if you’re interesting in exploring multiple factors (culture, government, colonialism etc) then that should work
EPQ 3 - that sounds really good because as you’ve identified, there are a lot of factors and ways to approach it. Especially if you feel idk how to phrase it but like attached to it because of your heritage and are passionate about it then
4 - don’t feel like you have to do it just because your teacher suggested it - do what you genuinely enjoy
5 - that’s actually really interesting. If you feel more interested in like criminology/psychology than political
topic then go for it!
Basically… don’t worry and just read like short articles about each of the 5 EPQ ideas to help you narrow down which one you want to do. Generally I’d advise that you do the EPQ topic you
enjoy because it’s a big commitment and if you don’t enjoy it, it will be so much harder