I remember reading some years ago that this was a problem for poor third world nations. They would send young students here, pay for their advanced educations with the expectation they would come home and use it to benefit their own countries, when these poor nations paid for these expensive educations, they asked the students to sign a pledge to return. Many of the students pledged to come back and then did everything they could to stay here. Now we are helping them dishonor their own countrymen who sacrificed to give them this advantage. This is awful, these people need to go home and take care of their own. These third world countries need their doctors, their engineers, their programmers, their teachers. This is wrong on so many levels!
Wow. Interesting.