All of Mexico and South America? No. Much of Mexico and Central America? Maybe.
Overlooking the problem of the racist and anti-Catholic US absorbing these majority black, Indian, metzio, Catholic peoples into it's system via conquest just look at two major things: Logistics and disease.
Conquering Central America would be a nightmare for the US, mountainous, easy home to guerrilla warfare, and lots of delightful local diseases that the invaders aren't accustomed to. Then we have the issue of logistics, the US is not going to dominate the Gulf anytime soon after 1830 and would not be on equal footing with the European powers (even many SA ones) until probably 1865 (and that's because of the Civil War) so transporting armies south and inland then supplying them over this rugged terrain is an issue.
Politically it is an issue too as most Latin American nations have developed a national identity at this time and are more than ready to resist people who try to conquer them.
To put this all in perspective though, look how long and bloody it was for the US to simply digest all the parts of Mexico it took in the Mexican American War, these were mostly unpopulated or filled with tribes of various loyalties.
Now imagine taking all of Mexico into that mix with its attendant populations and political/cultural differences. Not a pretty sight (three way Civil War anyone?).
Put simply, it is logistically difficult to the point of ASB intervention and politically so as well for the US to outright conquer all of the Western Hemisphere, however, it is not impossible for them to gain more of it than they did OTL, but gaining all of it is so unlikely as to be ASB.
Overlooking the problem of the racist and anti-Catholic US absorbing these majority black, Indian, metzio, Catholic peoples into it's system via conquest just look at two major things: Logistics and disease.
Conquering Central America would be a nightmare for the US, mountainous, easy home to guerrilla warfare, and lots of delightful local diseases that the invaders aren't accustomed to. Then we have the issue of logistics, the US is not going to dominate the Gulf anytime soon after 1830 and would not be on equal footing with the European powers (even many SA ones) until probably 1865 (and that's because of the Civil War) so transporting armies south and inland then supplying them over this rugged terrain is an issue.
Politically it is an issue too as most Latin American nations have developed a national identity at this time and are more than ready to resist people who try to conquer them.
To put this all in perspective though, look how long and bloody it was for the US to simply digest all the parts of Mexico it took in the Mexican American War, these were mostly unpopulated or filled with tribes of various loyalties.
Now imagine taking all of Mexico into that mix with its attendant populations and political/cultural differences. Not a pretty sight (three way Civil War anyone?).
Put simply, it is logistically difficult to the point of ASB intervention and politically so as well for the US to outright conquer all of the Western Hemisphere, however, it is not impossible for them to gain more of it than they did OTL, but gaining all of it is so unlikely as to be ASB.