Some members have asked about JPA scholarships for graduate studies. I just wanted to point out that it is possible to get an American graduate degree without government/institutional sponsorship. Of course, you need a stellar undergraduate GPA and good, credible letters of recommendation from your lecturers, but assuming you have those, you should take the GRE and apply directly to PhD programs. If you are accepted, you almost surely will be fully funded by the PhD program. Full funding here means all tuition and fees paid, plus a monthly living allowance sufficient to cover rent + everyday expenses. In return, you serve part-time as a teaching or research assistant. You will not be held to a bond upon completion of your studies.

Funding is much, much harder to get for Master's programs. So if PhD is your goal, work hard for your Bachelor's, get a high GRE score (easy to do), and give U.S. programs a shot.