I would say that US citizens have an easier time doing a masters or PhD because they are eligible for many scholarships and fellowships that international stude

I would say that US citizens have an easier time doing a masters or PhD because they are eligible for many scholarships and fellowships that international students do not qualify for. In addition, good universities usually offer research or teaching assistantships which result in a complete tuition waiver as well as a monthly stipend. So, US citizens can definitely afford a masters or doctorate - but they are in so much debt from undergrad that they prefer to work than study further.