Rupert Murdoch got US citizenship because of foreign ownership rules. From his wiki page:
> On 4 September 1985, Murdoch became a naturalized citizen to satisfy the legal requirement that only US citizens were permitted to own US television stations.
China doesn’t allow for or recognize dual citizenship, so it doesn’t matter unless they also gave up their Chinese citizenship (rumor has it the CPC relaxed this rule for a certain snowboarder). But ya, that Murdoch is also Australian is probably benign.
