I would say do not apply/reapply graduation visa for parents at this time! I know at least 4 people whose parents visa was rejected recently for Dec graduation! .....my parents' visa was also rejected ! there  is no reason !! if you guys consider my suggestions , just wait for next season....kina hami amrika embassy lai dhani banaudai chau? ahele lai kasailai visa deyeko chaina ....lagbhang 100% vanda ni huncha...apabad ma kasailai diyo hola tyo farak kura ho ....afno samaya ra paisa ko sadupayog garau sathi haru ho! yo desh afai khokro bhaisakeko cha...kehi chaina ...amrika nagumdaima sansar sakinna!! ....finally do not waste your money and time...I am not going reapply again even for my mom or dad  at this moment......yes it really sucks!!