In 1991, Sen. John McCain, R-Ariz., was reprimanded by the Senate Ethics Committee for his "poor judgment" in meeting with federal bank regulators who were investigating Arizona businessman Charles Keating, one of his campaign contributors. Ever since then, McCain has been trying to show he is not a hack politician kowtowing to special interests but a man of integrity and principle.

 Yet the main principle served by McCain's crusade for campaign finance "reform" has been the principle of incumbent protection, the same goal that motivates hack politicians who kowtow to special interests. In the end, it's hard to see how McCain's crusade to remove the corrupting influence of money from politics is any more admirable than the corruption of which he was suspected in the Keating scandal.

 McCain was one of five senators who met with regulators in 1987 and encouraged them to ease up on Keating's Lincoln Savings and Loan Association, which was under scrutiny for risky investment practices. The government ended up bailing out the S&L's federally insured depositors two years later at a cost to taxpayers of $3.4 billion, and Keating served several years in prison for fraud, although his conviction was later reversed because of juror misconduct.

 Between 1982 and 1987, Keating had steered $1.4 million in campaign contributions and gifts to the five senators. McCain had received $112,000 of that, along with nine trips on Keating's jets to the Bahamas and elsewhere.

 Although the bank regulators later said they felt pressured by the Keating Five's intervention, the senators insisted they were not trying to exert inappropriate influence. McCain even said as much during one of the two meetings. "I would not want any special favors for them," he said, according to notes taken by one regulator. "I do not want any part of our conversation to be improper."

 But when the meetings were publicly exposed, leading to 23 days of congressional hearings, McCain had an epiphany. "The thing I learned was that it's not only impropriety that counts," he said during his 2000 presidential campaign. "It's the appearance that's just as important."

 Whether McCain really learned that lesson is debatable. As chairman of the Senate Commerce Committee, he received hundreds of thousands of dollars from companies affected by the committee's work, and he has repeatedly been criticized for intervening with regulators on behalf of businesses whose employees gave him money, including Paxson Communications and AT&T.