Hmmm...well, I feel that, with your stats, you should still be able to get into a first-tier school...I'm just not sure about the ones you applied to (GW and Emory). The only school of these schools I know anything about is Emory, and that's only because I went there undergrad...Emory's admissions are getting tougher. From what I remember being told by an Emory admissions office (Janet Balej, I believe, is her name), they don't really care for LSAT scores under 160 (though, with a 159 and a 3.87 GPA, I still wouldn't count you out). Still, Emory is definitely raising their standards a lot in terms of who they accept and numbers...and had you applied a few years ago, I would have felt better about your chances there...all I can offer is that I wouldn't be surprised either way (if you get in or if you get rejected).
Looking at USNews, you're in the range for the other schools you applied to (GPA above the 75th, even)...even Cardozo (and getting rejected there doesn't make your chances at Emory look too good)...so it really sucks that they waitlisted you. But, hopefully, you can get into Temple, American and/or Brooklyn. The fact that you haven't heard yet might be good, if these schools have already rejected people (but, then, I think Emory sends out acceptances before rejections).
Good luck!