(CNN) -- Sergio Garcia knows the law well. He has a law degree and passed the California bar exam -- on his first try. Now he wants to practice that law, giving advice and taking on cases. "I'm fighting for my American dream," he said. Wednesday was a landmark day -- his first case before the California Supreme Court. But he's not able to act as a lawyer in front of the justices, because the law he loves is not on his side. Garcia, 36, has been an undocumented immigrant since he was brought to the United States as a child from his native Mexico, and that means he cannot get a law license.
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Undocumented immigrant Sergio Garcia fights for his California law license
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Is it legal for an undocumented immigrant to practice law?
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"I'm fighting for my American dream," Sergio Garcia says
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DOJ: How can someone without legal status become licensed as a lawyer? 
The line for @placeholder citizens is so long it could be another six or seven years before his permanent residency is confirmed, he estimated. 

You should decide what "@placeholder" is referring to. Choose between:
- American
- CNN
- California
- DOJ
- Garcia
- Mexico
- Sergio Garcia
- Supreme Court
- United States
Mexico
The line for "@placeholder" refers to the long wait time before Sergio Garcia's permanent residency in Mexico is confirmed.
So, based on this context, we can infer that @placeholder refers to "Mexico"..