Fedex appears to be experiencing trouble with the sheer volume of H-1B petitions filed
By Ashwin Sharma
Several of the Cap Subject H-1B professional worker cases we submitted to USCIS via overnight Fedex from Saturday onward show no tracking information updates. Other sources are also indicating that Fedex is experiencing difficulty handling the sheer volume of H-1B applications filed.
The U.S. Immigration Law Blog by Ashwin Sharma 