One of my friend who is a Phd Student wanted to invite their parents for Masters graduation last December and they rejected their visa. Their claim was they don't have strong tie back in Nepal, infact, their other son and two daughters were back in Nepal.

I applied for my parents visa 3 weeks ago for my Phd graduation in May. They also rejected both of their visa saying they don't have strong tie to come back.

The gist is they don't look at anything except all the information on the DS-160, so I don't even know how to prepare the case. They hardly ask any questions, in my parents case, they asked two questions, why you going and who else is back in Nepal. That is pretty much it