hello friends ,

I wanted to get some advice regarding inviting parents for graduation. Me as well as my younger brother both are graduating the same time. we are in a different school. Is it a good idea to send invitation letter from both of ours school or should we just send one invitation letter from anyone of us. I am just afraid if the visa officer might think since  both me n my brother are here (only siblings) my parents wont return back.

what would be the best idea folks. any advice. i will really appreciate any suggestion or your own experience. thank you