Are there any PhD search engine sites that include programs from US colleges?

I'm currently sifting through potential programs via findaphd.com. It's the most comprehensive site I've found so far, but it seems like there aren't any offerings from schools in the US. I'd like to do one in the US to avoid having to deal w/differences in time zones and other international barriers.

I have a BS and am looking to do an online PhD, preferably one that is funded (and skipping MS). I understand that at some point I'd likely have to go to a physical campus for research and that is fine.

I was in a Genetics and Genomics PhD program previously, but had to leave due to medical issues.