Are Unions Exempt in DISCLOSE Act?

Politico reports on an amendment that was added to the new campaign finance law which may exempt labor unions from its provisions:

A Democratic amendment tucked into campaign finance legislation Wednesday night appears to exempt big labor unions from proposed disclosure requirements.

The change, inserted by Rep. Bob Brady (D-Pa.), chairman of the committee charged with handling the bill and a key union ally, would also affect other groups funded by members who pay dues of less than $50,000. While the move may satiate liberal Democrats who had become uneasy with an exemption for the National Rifle Association, a union loophole will certainly cause big business to cry foul.

The bill could come up for a vote Thursday on the House floor.

The underlying bill is intended to blunt the impact of a January Supreme Court ruling overturning laws that had barred corporations and unions from airing certain types of election ads.