This seems a little odd to me - most people seeking asylum aren't exactly flush with cash and frequent vacationers or business travelers. Who, exactly, would be affected by this new law? I'm pretty sure the Donald Trump types in Indonesia aren't hopping on a raft and floating the ocean when wanting to make some business deals in Australia.
To put a bit of a twist on this, I've always felt it would be wise and also fair if my government here in Canada refused reentry of any refugee seeking asylum in Canada who then turns around and returns to their homeland on vacation. It displays a false narrative of imminent danger in one's home country if they come to Canada and claim they are in physical danger at home and wish to seek safety in Canada but then are just dandy fine traveling back "home" to visit friends and family and tell them all about what great suckers Canadians are. And to top it off, many of these same refugees then rush to the Canadian embassy in their "home" country if trouble starts brewing while they're there on vacation. It happened most recently when thousands of Syrians, who sought refuge in Canada but went "home" on vacation, scrambled to get Canada to evacuate them when trouble erupted there.