The opposition has been critical of the Centre's handling of the situation, accusing it of not doing enough to ease the hardships of the migrant workers, many of whom have lost their jobs during the lockdown which started on March 25.
They have been working tirelessly but silently since the Uttarbanga Express crashed into the Vananchal Express at the Sainthia station in Birbhum district, ferrying the injured, donating blood and helping out in the morgue.
The return of the US servicemen's remains was part of a deal that was agreed to by Trump and Kim back in their summit in June.