Update: Read The Federal Judge's (Susan Bolton) Opinion On Arizona's "Immigration" Law, SB 1070.

Read the full text of the opinion here.

Key parts of the judge's ruling are as follows:

Applying the proper legal standards based upon well-established precedent, the Court finds that the United States is not likely to succeed on the merits in showing that the following provisions of S.B. 1070 are preempted by federal law, and the Court therefore does not enjoin the enforcement of the following provisions of S.B. 1070:
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Portion of Section 5 of S.B. 1070
A.R.S. § 13-2929: creating a separate crime for a person in violation of a criminal offense to transport or harbor an unlawfully present alien or encourage or induce an unlawfully present alien to come to or live in Arizona
Section 10 of S.B. 1070
A.R.S. § 28-3511: amending the provisions for the removal or impoundment of a vehicle to permit impoundment of vehicles used in the transporting or harboring of unlawfully present aliens

Applying the proper legal standards based upon well-established precedent, the Court finds that the United States is likely to succeed on the merits in showing that the following Sections of S.B. 1070 are preempted by federal law:
Portion of Section 2 of S.B. 1070
A.R.S. § 11-1051(B): requiring that an officer make a reasonable attempt to determine the immigration status of a person stopped, detained or arrested if there is a reasonable suspicion that the person is nlawfully present in the United States, and requiring verification of the immigration status of any person arrested prior to releasing that person
Section 3 of S.B. 1070
A.R.S. § 13-1509: creating a crime for the failure to apply for or carry alien registration papers
Portion of Section 5 of S.B. 1070
A.R.S. § 13-2928(C): creating a crime for an unauthorized alien to solicit, apply for, or perform work
Section 6 of S.B. 1070
A.R.S. § 13-3883(A)(5): authorizing the warrantless arrest of a person where there is probable cause to believe the person has committed a public offense that makes the person removable from the United States

The Court also finds that the United States is likely to suffer irreparable harm if the Court does not preliminarily enjoin enforcement of these Sections of S.B. 1070 and that the balance of equities tips in the United States’ favor considering the public interest. The Court therefore issues a preliminary injunction enjoining the enforcement of the portion of Section 2 creating A.R.S. § 11-1051(B), Section 3 creating A.R.S. § 13-1509, the portion of Section 5 creating A.R.S. § 13-2928(C), and Section 6 creating A.R.S. § 13-3883(A)(5).