If your going for an FAA licence then most schools offer it as part of the course. As for the JAA licence in the US, i dont know!
I went to riverside flight centre in Oklahoma - very good but they are getting alot of students there now and it may take you a few weeks to get through. Give yourself more time when you are out there to get the TSA check done (FAA Licence only, not applicable to students doing JAA licences). I would recommend RFC for quality of instruction and value for money but you will need at least 5 weeks to complete the FAA PPL.