Before worrying about English proficiency like I did, please check out with the unis abt what you’re supposed to do. There as some schools which ask only for the TOEFL/IELTS or give an option of home tests like DET but some are totally based on your native language.
Like I am an Us citizen from India , am supposed to submit english scores for some colleges like Umass Amherst for example but for Mount holyoke I will not because I speak english better than my own native english.
You are a US citizen, not an international applicant
yeah but there are some schools which evaluate english proficiency based on curriculm not citizenship