Thanks Tino, I read the following:
ALWAYS HAND-CARRY YOUR DOCUMENTS
Do not check the following documents in your baggage. If your baggage is lost or delayed, you will be unable to present the documents at your port of entry. As a result, you may not be able to enter the United States
Your passport, valid for at least six months beyond the date of your expected stay;
SEVIS Form I-20.here: ARRIVING AT A U.S. PORT OF ENTRY … WHAT A STUDENT CAN EXPECT (FACT SHEET). Does point 1 means that my passport should be valid for a period six months longer than my student visa?