Complex sentence: Haley signed an "Arizona-style" law cracking down on illegal immigration in June 2011, but the law is the subject of a lawsuit initiated by the United States Justice Department on numerous grounds, including claims the immigration law violates the Supremacy Clause.
Split into simpler sentences: Haley signed an "Arizona-style" law cracking down on illegal immigration in June 2011. The law is the subject of a lawsuit initiated by the United States Justice Department on numerous grounds, including claims the immigration law violates the Supremacy Clause.