The new oceanfront property could be in... Arkansas and Pennsylvania. With the Gulf of Mexico expanded, there would be even more warm water flowing into the Atlantic as the Gulf Stream.
As for Michigan having a Mediterranean climate while California turns into a desert... people seem to love San Francisco -- but not Fresno.
Sure, we would get economic activity by building new coastal cities, but they would probably all look like Dallas or Seoul.
The greatest evil is not now done in those sordid "dens of crime" (or) even in concentration camps and labour camps. In those we see its final result. But it is conceived and ordered... in clean, carpeted, warmed and well-lighted offices, by (those) who do not need to raise their voices. Hence, naturally enough, my symbol for Hell is something like the bureaucracy of a police state or the office of a thoroughly nasty business concern."
― C.S. Lewis, The Screwtape Letters