I was more concerned about the fact that OP is international and presumably not a US citizen / doesn't have a green card if they are at risk of being deported. OP is unable to afford another year of school in the US which means OP is not rich... How do they expect to be able to pay for medical school, if they can't take out loans here? I'm not an expert at this, but it seems fairly likely to me that OP has very slim chance of getting into a US MD/DO program at this time. It just jumped out at me that maybe the OP has bigger problems right now than he/she realizes.
Regarding how "the 2nd school would allow this to happen"... I think this falls entirely on the OP's head. Personally I think prerequisites are dumb, and people should be able to do what they want. If somebody wants to pay money and sign up for a class, they should be allowed to do that. We're adults and should be responsible enough to do research and make good decisions. I particularly have no sympathy whatsoever for someone applying to MEDICAL SCHOOL, who will be responsible for much more important, life altering decisions in the not-too-distant future.