For a super rich Brazilian businessman, La Jolla can be a nice summer home when it is winter in the south (and a good winter home for holidays when it is hot and humid in the south). Plus, you don’t have to go around with a phalanx of bodyguards to prevent getting shot down or kidnapped for which Brazil is well known.

Visa restrictions are only to keep poor people out. For a million $, you can buy a green card (officially called ‘Investor Visa’) directly from US government. Another way would be the lottery system (“Diversity Visa”). I have never heard of a millionaire being refused a visa (unless he is some sort of political troublemaker or criminal).