so if they don't look like they belong, they can be detained? maybe they look Mexican, that's grounds for detainment? what about if they look asian? what if they have a funny accent, like those people who are south of the border? if they haven't updated their hair style in 15 years, that means you can put them in cuffs..... Everything you said just screams of profiling and racial discrimination.
You do realize that she isn't an American right? her parents broke the law years ago, and snuck into the US with their infant daughter. She is a Mexican citizen, from mexico, living in the US. She has no US passport, has no SSN, and while she has lived here almost all her life, that doesn't change the fact that she is here illegally, and is not an american.
Last I checked, there wasn't a status of limitations on when someone can hide from the law for X number of years and their legal status would automatically change from illegal immigrant to legal one.
Her parents caused her to be in this situation; while I'm sure you blame the big bad ICE agents, for doing their job and enforcing the law, why don't you focus your moral outrage on the the people who are the root cause for this situation: those who snuck her in, bypassing all the legal routes of immigration and citizenship (which, for the record, are neither cheap nor easy for good reason), and put her in the crosshairs of the ICE agents.