You need to specifically search out FAA Part 141 Schools that are also on the USCIS SEVIS list of approved Schools.
Some of the FAA FSDO website pages include a list of Part 141 Schools. You can search for FSDO's located in your chosen area.
Here is the link to make it easier
Flight Standards District Offices (FSDO)
Also you can search the USCIS SEVIS approved list for any given state within the US.
You may not find any - in which case you will have to go to another state.
Again - here is the link to SEVIS (November 2011)
http://www.ice.gov/doclib/sevis/pdf/ApprovedSchools.pdf