No one has claimed responsibility for the explosion, but both the Taliban and the Islamic State group affiliate are active in Kabul.
Indecent assault and battery charges were dropped on Wednesday, after the accuser refused to testify about a missing phone, which the defence said could prove the actor's innocence.
Those who survived the arson said the attacker screamed 'Die!' when he started the fire and sprayed the inflammable liquid to accelerate the blaze.
The H-1B visa programme allows employers to temporarily employ foreign workers in the US on a non-immigrant basis in specialty occupations or as fashion models of distinguished merit and ability.
Nadia Murad, one of the thousands of women and girls from the ancient faith abducted by the Islamic State group as they overran swathes of Iraq in 2014, joined a group of survivors of religious persecution who met US President Donald Trump.