Nope. I think Schwab allows that, but my impression is that most do not.
I have/had several brokers. I think none of them accept wire transfers to other bankaccounts than the account where to money came from. I remember that I read it in tye conditions of several of these brokers.
If you can send money directly to pay bills, you can also send it to an offshore account anywhere. That's exactly what they don't want.