Considering that you have not actively contributed to any of the topics, there is really no reason for you to be sarcastic.
But I'll try to explain:
Your question is rather specific.There is probably simply no student who has tried this before.

Student internships in every 'foreign' country underlie specific regulations - none of which you can influence easily. In most countries, the responsibility for the internship lies with the university (not the place providing the internship).
As your internship has to be recognised by your uni and the American university has to accept your undergraduate programme as sufficiently similar, it requires a contract between your university and the particular uni in the USA you intend to visit.


So I suggest, you decide on a few universities that offer a programme aligning with your ideals/ principles/ curriculum.
Next step is for you to disclose your plan to your university/ programme leader/ paper leader and hope that they agree to take all the formal steps that are required in the process.
Once this is done, you will need to try and get a visa etc..

Good luck,
Fyzzio

P.S. It would be helpful if you keep reporting how it all developed.