Is someone with poor English grammar skills likely to have an accurate understanding of either US legal codes or the legal implications of BoA's internal memos...both of which are written in English?

I can read and write French, but it's been so long since I did so on a regular basis that I'd probably have difficulty writing a postcard in that language. Would you trust me to perform legal analysis on a pile of French documents? Because if you would, I'd like to be paid up front, in cash.