Sorry, federalism is a perfectly valid way to construct governments (if there are to be any valid ways at all.) 

https://en.wikipedia.org/wiki/Federalism

Not every nation has to be unitary, nor would it work if that were the case. 

To be fair, homes in the U.S are actually quite cheap compared to the rest of the developed world. Of course, that is because of geography more than anything else. 

That is because those countries implemented more socialist policies. All it does it drives the price of everything up.

While that might be partly true (a very small part), there is definitely a space problem in Europe (and some Asian countries like Japan.) Even in countries/city-states with freer markets than the U.S (like Switzerland, Hong Kong, and Singapore) housing prices are much higher than the U.S/U.S cities.  One of the great things about the U.S is the amount of space and resources we have with respect to the population size. It shows with our sprawling cities, and low population densities. 

As far as race goes, I posted a video a while back on Facebook where an old comedian pretty much described America today but this was back in the '70s. Her name was Moms Mabely and she is a legendary black comic. People don't seem to realize that race relations in America have always been fucked up. They're better now in my opinion but people also have the ability to broadcast any little detail that fits an agenda.

As for the president, I've seen several. I've been alive for Carter, Regan, Bush, Clinton, Bush II: Electric Boogaloo, and Obama. I think Regan and Clinton were better presidents but Obama did a great job despite the opposition he's faced. I'd vote for him again.... were it not for his latest decision.

Worst Metal Gear ever. Thanks, Obama. Fucked up my favorite series. I couldn't even finish that pile of poop.

Interesting. It was my favorite series of all time as well and I didn't care for TPP.