A lot of Universities ask to upload your I-94 as a proof of your presence in the USA

Steps:

• Go to Department of Homeland Security’s website
• https://i94.cbp.dhs.gov/I94/#/home
• Click on Get Most Recent I-94
• Read and Agree the terms and conditions
• Enter your Details - Name, Birthdate, Passport Number and Country of Citizenship
• Press on Enter
• Print your I-94
  • Export in the format as you like

Upload this to your University Portal