what's ur context?

otherwise, it could be anything, like SouthWest Airline

我问一个移民律师办工卡的事，我怀疑我的律师根本就没有递交材料，所以，他回信说you need to ask him for receipt notice from SWA first。所以我才这样问的，不知道SWA是什么？

The DOL, in concert with the local State Workforce Agency (SWA), processes applications for Alien Employment Certification (Form ETA 750). The date the labor certification application is filed with the SWA is known as the priority date. After the labor certification application is approved by the DOL, it should be submitted to the CIS service center with an I-140, Immigrant Petition for Alien Worker.

http://www.ows.doleta.gov/foreign/perm.asp#proc