Signed by the heads of four Arizona business consortiums, with board members including officers of Bank of America, Intel and the Arizona Cardinals football franchise, the letter urged Brewer to strike down the measure known as S.B. 1062. The letter raised the prospect that the legislation could stain Arizona’s national reputation and touch off a wave of unpredictable litigation thanks to the bill’s broad, vague wording. …

The corporate community’s engagement in the fight over S.B. 1062 was overpowering: American Express wrote to Brewer on Tuesday asking her to veto the law, according to a spokesman for the credit card company, which has a large presence in the state. JPMorgan, with its 11,000-odd employees in Arizona, said on Wednesday that the legislation “does not reflect the values of our country or the State of Arizona and should be vetoed.” The national bank Wells Fargo also opposed it, along with Apple, Marriott and other big corporations with significant Arizona-based investments.

The Arizona Super Bowl host committee, concerned about losing the 2015 championship that’s expected to generate a half-billion dollars in economic activity, joined in Wednesday with a public call for Brewer to veto the bill.

A few hours later, S.B. 1062 was dead; in her veto message, the governor decried the bill’s hazy language and declared it “could divide Arizona in ways we cannot even imagine” if it became law.