To the best of my knowledge, I was speaking to all sites not just US friendly. I'm sure there are some new or unproven sites that will still do what you're seeking, there just won't be very many and they won't be large sites. The whole point of the bonus money is to make you earn it so that you play at their site.
But again, I don't know nor have I investigated all of the sites out there.
I was just shamelessly noting that if you choose a more traditional site that we have many bonus codes available and those help to support the site.