Multiple U.S. Sponsorhsip Question?

[wahchintonka48]

Multiple U.S. Sponsorship Question?

I am a US citizen but my biological mother lives in the Dominican Republic. I came here thru my biological father who sponsored me when I was younger. I've lived with him and my step-mom (who is Illegal) since I was 6 yrs old (i'm 23 now). An Immigration Expert said that with the new immigration laws I can sponsor her and she can get her residency yada yada yada, i don't care about that. My only main concern and question is, If I sponsor my step-mom does that jeopardize my biological mother's chances of coming over?, because I ultimately want to bring her too. Can I sponsor as many people as I want or is there a limit? and if I sponsor my step-mom andget her residency can I also sponsor my biological mother too and bring her over?