What is Visa Administrative Processing?

Please refer to: https://travel.state.gov/content/travel/en/us-visas/visa-information-resources/administrative-processing-information.html

Provide the U.S. Consulate with any documentation requested of you. If they ask for academic information, work with your department for letters and such.  (International Student and Scholar Advising is not involved in the academic side of your Penn State experience.) Your graduate program faculty may be of assistance in helping you with any requested documentation.

If you are not able to arrive for the start of in-person classes at Penn State in your admitted semester, please work with your department: https://secure.gradsch.psu.edu/gpms/program/allPrimaryContacts.cfm 

Defer your admission to the next available semester.  Work with Pre-Arrival Advising to change the dates on your I-20 or DS-2019.