Your assumption is incorrect, because the article doesn't say "the goal is to bond people who overstay their visa frequently." (quoted from you). It says (quoted from article):
"to impose bonds on visitors from countries with high rates of visa overstays"
Quite different, as the latter means it applies to people who don't overstay their visas, but who have a great many fellow citizens who overstay their visas.
So, guilt by association, a method known to cause unfair results. Now the only question is to decide why the bond was imposed on the countries it was. Who wants unfair results, and why?
"to impose bonds on visitors from countries with high rates of visa overstays"
Quite different, as the latter means it applies to people who don't overstay their visas, but who have a great many fellow citizens who overstay their visas.