Total number of Persons of Indian origin is 18 Million and change. Assuming all of them are meddlers and all of them acquire dual citizenship. Will this many people can create "political meddling" say in voting in India? India has 1400 million people.Yes india will never allow it. It will create political meddling nothing more. even without it there is massive meddling as we speak.
You can also limit them by limiting to their host countries.