https://en.wikipedia.org/wiki/Guantanamo_Bay_detention_camp#...
https://en.wikipedia.org/wiki/Guantanamo_Bay_detention_camp#...
The fact that the US does not always live up to the ideals its espouses is no knock against those ideals.
The American system, for all of its faults, at least manages to select correct at times to point closer to its ideals. Maybe I don't follow closely enough, but I generally don't see anything like that happening. Perhaps a bit of 'de-Maoification' of his personality cult at one point?
The embrace of a more market economy wasn't a good accepted for its own sake, but more for its practical benefits, so I wouldn't count that.
Then have politicians run for office promising to address that. Once they're in office, they drop it completely, blaming bureaucracy and 'lack of political will'. Then voters start all over again, with heads held high on the belief that what they want could theoretically be possible with the next candidate. Or the one after that.
The Obama administration came into office on a promise to close Guantanamo, and offer a public option on healthcare. Neither came anywhere close to fruition.
For the first, talk to Congress (at least partially):
* https://www.theguardian.com/us-news/2016/feb/24/obama-guanta...
For the second, talk to Lieberman:
* https://www.commonwealthfund.org/publications/newsletter-art...
Probably plenty of things to blame Obama for with regards to how the Executive acted: these two are weak examples IMHO.