Mexico, Puerto Rico, Samoa, Hawaii, Guam, Cuba, Panama, and the Philippines?

In the last 100 years the trend has been been for America to invade a country and try to install a friendly government rather than formally annex them - Vietnam, Korea, Iraq, Afghanistan, Libya, Yemen, Syria.

Oh plus all the overseas military bases: https://en.wikipedia.org/wiki/List_of_countries_with_oversea...

Invade, none. Continue to occupy to this day? Several. Edit: Although we did take a small chunk of Syria without asking.

Invading countries to annex them is not even that bad if you give full citizen rights to their population. Invading to occupy, destabilise and depredate is much worse.

It's only because of geography that they haven't done it.

Instead they just plant people into the government and pretend it is still a sovereign nation.

It would almost be less repugnant had they made Afghanistan, Syria, Iraq, Korea and Yugoslavia US states and their population US citizens.