I haven't been able to do my job with respect to this project. There's a distinction between hard and impossible
Obviously as you said you're in the US and it sounds like your situation is very different (you haven't identified a law stopping your work just an ethics board that won't sign off for a reason you don't know).
Remember that what has been decided, and what is actually the case, are not always the same. That's why people advocate for changing the law. OP thinks the law is too restrictive; saying "well that's what the law is" is not much of a reply.