"This Policy Memorandum (PM) establishes U.S. Citizenship and Immigration Services (USCIS) policy on the adjudication of the Application to Extend/Change Nonimmigrant Status (Form 1-539)." - USCIS, June 1, 2012 .
"On August 15, 2012, U.S. Customs and Border Protection (CBP) unofficially confirmed for NAFSA that:
"CBP is no longer stamping I-20s at POEs. Recognizing that some staff at certain benefit granting agencies (for example, motor vehicle agencies) look for a stamp on these documents before...
Placing an Admission Stamp on Forms I-20 A-B and 1-20 M-N - CBP, Aug. 10, 2012 .
"As of Aug. 10, 2012, U.S. Customs and Border Protection (CBP) no longer provides admission stamps on Forms I-20/DS-2019 for prospective and returning international students and scholars (traveling with F, M, and J visas) seeking admission to the United States. This change makes CBP processes consistent...
UNCLASSIFIED 15 STATE 98754
AUG 20 2015
SUBJECT: 9 FAM Update – New I-20 and DS-2019 Forms
ICE, July 13, 2016 - "This guidance interprets the Form I-20, “Certificate of Eligibility for Nonimmigrant Status,” issuance regulation for prospective F-1 and M-1 students (8 CFR 214.3(k)) to guide SEVP adjudicators."