Are illegals entitled to these rights under our Constitution? I thought that was for legal citizens of the US. If they can't be held for being here illegally, then what good is the law that says it is illegal to enter and live in the US without going through the proper procedure. How can they be legally prosecuted for breaking US immigration laws? Too bad US citizens get prosecuted for breaking useless insignificant laws all the time, like putting a sign in the wrong place or burning trash without a permit or some other useless $hit.
Federal law allows Arizona to do EXACTLY what they intend to do.
Federal Immigration and Nationality Act
Section 8 USC 1324(a)(1)(A)(iv)(b)(iii)
State and local law enforcement officials have the general power to investigate and arrest violators of federal immigration statutes without prior INS knowledge or approval, as long as they are authorized to do so by state law. There is no extant federal limitation on this authority.
The 1996 immigration control legislation passed by Congress was intended to encourage states and local agencies to participate in the process of enforcing federal immigration laws. Immigration officers and local law enforcement officers may detain an individual for a brief warrantless interrogation where circumstances create a reasonable suspicion that the individual is illegally present in the U.S. Specific facts constituting a reasonable suspicion include evasive, nervous, or erratic behavior; dress or speech indicating foreign citizenship; and presence in an area known to contain a concentration of illegal aliens.
Anyone within a given country is subject to both prosecution AND protection of a given countries laws. This has been standard practice in western countries, under both civil and common law for centuries. Under your logic, the illegals could be murdered, and the murderers not prosecuted for the crimes.