Lots of sniping so far, but no one has addressed the original premise:
"Is There Enough of America Left To Be Saved?"
I believe there's "enough left", but that we won't be able to "save it all".
Some appendages will have to be let go -- for the same reason that it's sometimes necessary to amputate a gangrenous body part in order to save the rest. Fortunately, most of these geographical "appendages" are "extremities", and the inner core of the nation can survive without them.
For example, it's almost certainly necessary that we "cut California loose", or at least the coastal/southern third of the state. They want to be a separate nation, well, let them have at it. We'll keep the central agricultural region, and the north full of timber.
Same thing with southern Florida, particularly the Miami region.
That place is no longer a part of the America that I remember. Let it go, perhaps unite with Puerto Rico to form a new Caribbean nation. We'll be better off, free of both.
New England/New York state is more difficult. New Hampshire and Maine at least have semblances of sanity remaining, while such sanity has long since departed from Vermont, Massachusetts, Connecticut and Rhode Island. Perhaps we could exchange those states with Canada, in return for the provinces of Alberta, Saskatchewan, and Manitoba. Hey, if Canada will throw in the Yukon, we'll offer them Hawaii in exchange!
And of course there are New York state and New Jersey. But... draw a horizontal line through the map at Poughkeepsie, divide the state into two states, and northern New York (let's call it the new state of "Adirondack") would actually become red. So... merge New York City and Long Island with New Jersey, forming the new nation, "Metropolis". Might as well give them the "Philadelphia corner" of Pennsylvania, too (but definitely KEEP the rest!).
Maryland/northern Virginia -- not worth keeping. Let them become their own nation, and take DC with them, perhaps as part of Metropolis. We'll build a new capital for the red states somewhere else, more in the heartland. New Pentagon, too.
Chicago/Minneapolis -- give 'em to Ontario. Do you really care if Chicago remains part of the USA? If so, why?
Finally, Georgia (or at least a major part of it). In time, it's going to become the first "black majority" state. They can't stand the thought of whites ruling them, so... let them go their own way. The new nation of Kwanza, or... whatever. Just be sure to build a tall wall around the borders.
Yes, there is still a large -part- of America which can be saved.
Will we take the steps necessary to save it?