I have received the 797 which extends the green card by 48 months and have a trip to Canada planned. I just received an approval for the 751 i have filed in September and it says :
"You should not travel outside the United States until you receive your new Green Card, as you may have difficulty reentering the United States. If an emergency arises and you have a need to travel outside the United States before you receive your Green Card, you may make an appointment at your local USCIS office to request an I-551 stamp in your passport that shows temporary evidence of status as a lawful permanent resident. Please be aware that USCIS field office management determines whether to issue an I-551 stamp on a case-by-case basis. To make an appointment at your local USCIS office, please visit www.uscis.gov."\
is this just boilerplate language or does this override the 797? Very confused by the contradictory language.