It's legal to get H1b from consulting firm. And right now the job market is hot. It will be diffucult to get the money from them month to month. That is a very hard thing to get your own money from these guys. Don't sign a contract of any kind. you have to be very careful about it. you will never be paid for your last months salary. you can apply for your H1b on your own don't need the attorney. you can save come money like that.