<P> On April 23, 2010, Arizona Governor Jan Brewer signed into law SB 1070, which supporters dubbed the "Support Our Law Enforcement and Safe Neighborhoods Act". The act made it a state misdemeanor crime for an illegal immigrant to be in Arizona without carrying registration documents required by federal law, authorizes state and local law enforcement of federal immigration laws, and penalized those found to be knowingly sheltering, hiring and transporting illegal immigrants . </P> <P> The bill's passage immediately sparked constitutional concerns over potential civil rights violations and many have accused it of encouraging racial profiling . Tens of thousands of people demonstrated against the law in over 70 U.S. cities on May 1, 2010 (International Workers' Day). A rally in Los Angeles, attended by Cardinal Mahony of the Roman Catholic Church, attracted between 50,000 and 60,000 people, with protesters waving Mexican flags and chanting "Sí se puede". The city had become the national epicenter of protests against the Arizona law . Around 25,000 people were at a protest in Dallas and more than 5,000 were in Chicago and Milwaukee, while rallies in other cities generally attracted around a thousand people or so . There and in some other locations, demonstrators expressed frustration with what they saw as the administration's lack of action on immigration reform, with signs holding messages such as "Hey Obama! Don't deport my mama ." </P> <P> The case was filed by the United States Justice Department in the United States District Court for the District of Arizona on July 6, 2010, challenging Arizona's Support Our Law Enforcement and Safe Neighborhoods Act as usurping the federal government's authority to regulate immigration laws and enforcement . The plaintiffs also referenced the notion of federal preemption and stated that, "The Constitution and the federal immigration laws do not permit the development of a patchwork of state and local immigration policies throughout the country". Additionally, the Justice Department in its July 6, 2010 motion, requested that the federal courts issue an injunction to enjoin enforcement of the law before it goes into effect . Arizona responded to the motion . The 1976 precedent of De Canas v. Bica was relied upon in Arizona's Motion . </P> <P> On Wednesday, July 28, 2010, Judge Susan R. Bolton ruled, blocking key portions of SB 1070 including "requiring police to check the immigration status of those they arrest or whom they stop and suspect are in the country undocumented would overwhelm the federal government's ability to respond, and could mean legal immigrants are wrongly arrested ." Judge Bolton wrote: </P>

Which of the following is true about a majority decision reached by the u.s. supreme court