Obama's new beach house

Dug up some stories about our previous president. Three clickable headlines from 2015:

• • Obama to warn rising sea levels could cost US $200 bn
  • Obama: Rising sea levels could cost the US up to $200 billion
  • Climate change a top US security issue: Obama

And the actual document (PDF) with the numbers: 

Findings from Select Federal Reports: THE NATIONAL SECURITY IMPLICATIONS OF A CHANGING CLIMATE
May 2015

I bring this up because they just bought a $14+ million oceanfront mansion in a very tony part of Cape Cod, Massachusetts. Is he some kind of later-day King Canute and trying to stop the waves?

Again, I will believe that this is an emergency when the people who are telling me that this is an emergency start acting like this is an emergency.