The White House is expected to file a lawsuit next week. Arizona has raised more than $120,000 in private donations to defend the legislation.
Arizona officials are girding for the legal challenge. The state has raised $123,000 in private donations to defend the law, according to Gov. Jan Brewer's office. Money has come in from all 50 states, in donations as little as $1.
Obama administration officials declined to reveal the basis for the suit. But legal experts say the challenge is likely to include the argument that in passing the law, Arizona violated the Constitution by intruding on the federal government's authority to regulate immigration...