I maybe wrong but i think you are wrong
@Naturgrl. Extended family is more than enough reason to get travel authorization. He might be eligible and will indeed get permit to travel and otherwise he could also travel since he already have valid visa. There is no way until you try and get your result. We already have had multiple posts who tried and got the permit.
Stating that please
@Yassinesnit do your research before making any decision.
It would be great if we could tune down if/maybes with a disclaimer if we are entirely not sure our advice's are reliable in this time of uncertainty.