A federal judge blocked the most controversial parts of Arizona’s much-protested immigration law on Wednesday, according to a Star Tribune article. United States District Court Judge Susan Bolton blocked portions of the law, which is still set to go into effect Thursday, including a section that made it illegal to fail to provide proof of citizenship when asked to do so by a law enforcement official. Also blocked from enactment, was a section of SB 1070 that required immigrants to the United States to keep documents proving citizenship with them at all times. “There is a substantial likelihood that officers will wrongfully arrest legal resident aliens under the new (law),” Judge Bolton said in the article. SB 1070, signed into law by Arizona governor Jan Brewer in April, provoked protest, in part, because it asked police officers to identify undocumented immigrants on sight thus creating the potential for racial profiling. Four University of Minnesota students arrived in Phoenix, Ariz., today to join other SB 1070 protesters. The argument over the constitutionality of SB 1070 is expected to eventually reach the United States Supreme Court.