When Judge Susan Bolton granted an injunction halting the enforcement of key provisions of the Arizona immigration enforcement law, she ruled in favor of the Justice Department's position, but against the president's political interest. Had the judge sustained this law, it would have made moot Obama's opposition to the Arizona law. As it is, she has transformed the law into a big campaign issue against Obama. Now the president is standing in the way of a state that wants to enforce the law that he won't. The Arizona law is massively popular in the United States. Over 60 percent of...