you. how do the opponents of the law plan to convince the just is that justices that can not stand? reporter: you might hear dozens of protesters chanting for and against the law. those that oppose the law, a case of states going too far. the feds basically preempt, this is their area, their authority to regulate immigration. i talked to celia wong, from aclu. she says this is a issue of public policy. this is about legalizing racial discrimination. here is what she told us. the law is going to cause significant civil rights problems throughout arizona and other laws that will consider similar legislation. regardless of the supreme court outcome. which, is just about the issue of whether the state laws go outside the boundaries of state power and interfere with the federal government s control over immigration matters. reporter: bill, there are four different provisions of the law at issue here today.
aclu. she says this is a issue of public policy. this is about legalizing racial discrimination. here is what she told us. the law is going to cause significant civil rights problems throughout arizona and other laws that will consider similar legislation. regardless of the supreme court outcome. which, is just about the issue of whether the state laws go outside the boundaries of state power and interfere with the federal government s control over immigration matters. reporter: bill, there are four different provisions of the law at issue here today. bill: the supporters of the law, how do they respond to that claim, shannon? reporter: folks in arizona say it is absolute necessity. in their opinion the federal government has not done the their job of enforcing the immigration law. by the department of homeland security there are 360,000 illegal immigrants in arizona. we talked to cochise county, larry deaver about it. he says he needs the law to help enforce the law. i
you. how do the opponents of the law plan to convince the just is that justices that can not stand? reporter: you might hear dozens of protesters chanting for and against the law. those that oppose the law, a case of states going too far. the feds basically preempt, this is their area, their authority to regulate immigration. i talked to celia wong, from aclu. she says this is a issue of public policy. this is about legalizing racial discrimination. here is what she told us. the law is going to cause significant civil rights problems throughout arizona and other laws that will consider similar legislation. regardless of the supreme court outcome. which, is just about the issue of whether the state laws go outside the boundaries of state power and interfere with the federal government s control over immigration matters. reporter: bill, there are four different provisions of the law at issue here today. bill: the supporters of the law, how do they respond to that claim,