Challenge to union campaign-finance loophole set for trial

BOSTON – A trial date has been set in December for a lawsuit challenging a Massachusetts campaign-finance law that lets unions contribute as much as $15,000 to a candidate for election to a state or local office while barring businesses from making any contributions at all.
The action came just weeks after a federal judge in Kentucky granted a preliminary injunction in a similar case, challenging a state law that lets unions donate to campaigns but bars corporations from doing so. The March 31 ruling cited the unequal treatment of corporations and unions under the state law.