Not all people can do that easily because if you want to convert it to USD, then you should provide some documents to prove for some purpose or should be done some illegal ways. But this announcement has given many people surprise and even many politicians didn't have any clue of this is going happen. I don't think because of this it will stop, but to some extent, it will reduce the black money.
Not really. AFAIK, most of the politicians became safe even some peoples who's having black money. As this news was leaked before few days. I don't want to mention their name and company and they had gifted new cars to all their employees with n agreement that they should sell those cars after two months!