Hi
Most US based firms hire Pakistani and Indian writers because they produce quality work at a cheap price. Agreed that they are not trained professionally but they do learn the art of academic writing with experience. Plus the Internet helps them tremendously. I am one such writer. Agreed many dont write correct english but then selecting a quality writer is up to the customer. He should interact with the writer a few times on a personal basis as in exchange emails and then gauge his english standard and level of commitment if the intention is to hire a freelance writer and not through a firm. Most of these writers will work better if the customers gives them the appropriate instructions throughout the paper progress. That way he can better match the requirements as every paper has to be customized.