Only for Mexicans, puerto ricans, AA, and native americans right?
If you look at the AAMC website, they give the data which will back up most of the following:
Take the following stats: 3.1 gpa, 28 MCAT.
A black student with these stats has 58% chance of getting accepted into an MD school.
A Latino student has a 37% chance.
A white student has a 15% chance.
An Asian student has an 8% chance.
In general, under-represented minorities (URMs) need to have significantly lower scores/GPA to be accepted to medical school, especially MD. The difference can be huge. For instance, a person with a 27 MCAT (or even under 30) will virtually never receive an MD acceptance... Unless he/she is URM, then it's an okay score. URMs include Latino, Native American, and Hispanic applicants.
Over-represented minorities often need to have significantly higher scores to be accepted. ORMs include East Asian and South Asian (mostly Indian) applicants.
Caucasian applicants are somewhere in between URM and ORM.
Personally, I kind of agree with the logic behind admitting URMs with lower scores. They're called URMs for a reason: there are nowhere nearly enough black and Latino doctors, and there are not enough doctors practicing in Latino and black communities. URMs are far more likely to work in these communities and help alleviate some of the healthcare disparities in the USA.
I'm not sure what to think of the ORM policies though. I get that Asians and Indians are over-represented in medicine (though in the case of Indians, the reasons for this are sometimes really awful), but medical school admissions is crappy enough for white people. It sucks to see my indian and asian friends having such a hard time.