If it was engaged in slavery, and then segregation (up to the 60s), had the biggest incarceration rates in the world (of hugely disproportionally black population), had torture sites off limits to the law, send drones to kill people without trial and without official act of war to the other country, was the only western country to still have the death penalty, and at great rates, and even for 15 year olds, plus routine police shootings on innocent people, SWATing invasions with victims for insignificant offenses, and so on, plus was established on the deterritorialization, interment, and genocide of a whole race of millions of natives, ad even did lethal medical experiments on unsuspecting foreign populations, if it was the only country that dropped atomic bombs to another (and to civilians at that)?
Would you be OK with a collective foreign effort to politically reform? Perhaps change the constitution or something based on what some foreigners insist to be there?
Especially if all cases of such "valiant" efforts on your end in the last 20 years have made things worse, turning stable regimes (Iraq, Libya, Syria) to hell-holes of loss, civil war, fanatical muslim rule, and turf wars?