I think one of the earlier posters referred to asking the question on social media. I gather BA are keen to look good on social media, so you may get further by asking them via Twitter?
I also know that BA are very aware of the American disability act as we all have to do a module every year on it. Whether that would be of use in your case now is questionable as you won’t be granted entry to the USA anyway. Though, with the Donald, that could change tomorrow .