Originally Posted by DateDoc

You will not get deported unless you are here illegally. Also, the Supreme Court has upheld similar cases before, like Hiibel vs. Nevada:

During a valid investigative stop (established under Terry v. Ohio), a police officer can require persons to identify themselves if they have ?reasonable suspicion? that this information is pertinent to an investigation they are conducting in the course of enforcing a clear and specific state law. Individuals who refuse to respond may be detained and arrested by the enforcement officers.