Honestly what could he do. Sending in massive aide ATM would be another exercise in futility.
I suspect the Pentagon is formulating plans right now on how to get a few hospital ships and maybe a carrier group down there to initiate a rescue and recovery effort but that takes time.
Let the man sleep a bit so that his under-staff can get proposals ready for him to act on. And I would say the same for any POTUS. This disaster is gonna test the world economy greatly (read the USA's economy) No sense rushing in without a bit of preparation.
The draw back is we won’t realize the full extent of the disaster until the tsunami’s subside. This won’t be just about Chile.
I guess they have to worry about our ships,both civilian and military in the pacific.