I was thinking to do a MSc program in the States, but after reading your note, I have second thoughts. Where do you want to go next?
Discussion
If you get a scholarship then you can try and come here ! But be cautious with your expectations! I have some countries on my mind but I will need to visit them and live there first ! Definitely not South America !
If you're not a citizen, the prospects of getting work visa after the graduatiation for being able to stay are pretty slim nowadays. Little better with MSc in STEM, but still quite a tall order.
So think twice about what are your plans after the school. It still might be a great option in certain cases. But long gone are the days when uni was a good stepping stone to the US.