my graduation ceremony is coming near. i want to call my parents. so, what kind of document should i have to send nepal. to demonstrate them when us the counselor ask for them. like invitation letter, i20 and what other document can you guys have any idea please help with this

Your school can write an invitation letter to your parents. You can also write your version. Dont think embassy needs financial docs now days.

The rules have changed now and the school won't write invitation letters any more.

mentioned the reason of visit in application form rest they judge themselves . NO unnecessary documents at all.