The outrage over the Chamber is especially amusing considering the role of foreigners in U.S. labor unions. According to the Center for Competitive Politics, close to half of the unions that are members of the AFL-CIO are international. One man’s corporate commingling is another’s union dues.

Unions and liberal groups are hardly cash poor this year in any case. The Campaign Media Analysis Group looked at the combined spending of candidates, their parties and outside groups and found that Democrats outspent Republicans $47.3 million to $40.8 million in a recent 60-day period.

Democrats claim only to favor “disclosure” of donors, but their legal intimidation attempts are the best argument against disclosure. Liberals want the names of business donors made public so they can become targets of vilification with the goal of intimidating them into silence. A CEO or corporate board is likely to think twice about contributing to a campaign fund if the IRS or prosecutors might come calling. If Democrats can reduce business donations in the next three weeks, they can limit the number of GOP challengers with a chance to win and reduce Democratic Congressional losses.