The NAACP has become the latest organization to boycott Arizona over the state's new immigration law. The civil rights group has joined with others in a class action lawsuit today that challenges the new law requiring police to demand "papers" from people they stop who they suspect are not authorized to be in the U.S. "We are joining this lawsuit because the Arizona law is out of step with American values of fairness and equality,†said Benjamin Todd Jealous, President and Chief Executive Officer of the NAACP. "It encourages racial profiling and is unconstitutional. African Americans know all too well the insidious effects of racial profiling.†The lawsuit charges that the Arizona law unlawfully interferes with federal power and authority over immigration matters in violation of the Supremacy Clause of the U.S. Constitution; invites racial profiling against people of color by law enforcement in violation of the equal protection guarantee and prohibition on unreasonable seizures under the Fourteenth and Fourth Amendments; and infringes on the free speech rights of day laborers in violation of the First Amendment. A number of other states are considering similar laws, according to the group. Arizona SB 1070, or the Support Our Law Enforcement and Safe Neighborhoods Act, was signed into law by Gov. Jan Brewer on April 23. It is considered to be the broadest and strictest measure to fight against illegal immigration in the U.S. The law makes it a state misdemeanor crime for an alien to be in Arizona without carrying registration documents required by federal law, steps up state and local law enforcement of Federal immigration laws, and cracks down on those sheltering, hiring and transporting illegal aliens. Arizona has an estimated 460,000 illegal immigrants and has the most illegal border crossings as it serves as the gateway for thousands of Mexicans and Central Americans, according to the Associated Press. The coalition filing the lawsuit includes the NAACP, the American Civil Liberties Union, MALDEF, National Immigration Law Center, ACLU of Arizona, National Day Laborer Organizing Network, and the Asian Pacific American Legal Center. The NAACP is not alone in its boycott. Numerous U.S. cities — including Los Angeles and Seattle -- and local organizations are also steering clear of the Grand Canyon State. Late last month, Alpha Phi Alpha Fraternity Inc. announced it was moving its 104th anniversary convention from Phoenix to Las Vegas, Nevada. The convention was expected to draw up to 10,000 visitors to Arizona–adding hundreds of thousands of dollars in revenue to the local economy. "We will not only speak with our voices and our feet, we will speak with our economic clout; and we will not spend our money in Arizona and urge other organizations and people who believe in equality under the law, to do the same,†said Herman "Skip†Mason, the fraternity's national general president. Tourism is one of the biggest sources of income for Arizona. The Arizona Hotel and Lodging Association has reported at least 23 meetings had been cancelled throughout the state, representing an estimated $6 million to $10 million in lost revenue. A Phoenix deputy city manager said fallout from the immigration law could cost the city about $90 million over the next five years. In response, Brewer last week formed a task force to prepare a marketing strategy to deal with public criticism of the law. Though there are numerous boycotts of the state, it appears that the public supports the new Arizona law, according to a recent poll by the Pew Research Center for the People & the Press. Fully 73% say they approve of requiring people to produce documents verifying their legal status if police ask for them, 67% approve of allowing police to detain anyone who cannot verify their legal status, and 62% approve of allowing police to question people they think may be in the country illegally. President Barack Obama has called the law "misguided," but realizes that reform would be difficult to achieve and would require bipartisan support - something sorely missing in the Senate.