If an immigrant's business out compete a local business fair and square, then there's nothing to bitch about.
And I wouldn't weigh the need for a job between a teen and the Cambodian woman, it's obvious that the woman need the job MORE than the teen. She has four girls back in cambodia. That alone is more than a good enough reason for her to "take away" some teen's job so he can pay for his car. The teen can take the bus, my parents did and they barely know any english. Immigrants are not outsourcing, they (we) just happen to try harder.
There's no "shit" here man. Just my $0.02