Supreme Court case on Unions, Bargaining and Fees

The LA Times reports that the Supreme Court has taken up a case in regards to the charging of fees to those people who do not want to be a Union member, but still benefit from collective bargaining.  

The article states:

The Supreme Court said Tuesday that it would hear a major challenge to California's public unions and decide whether they may charge fees to non-members to support collective bargaining.
At issue is a 1970s-era court precedent that allows these unions in California and 20 other states to collect "fair share" fees from all employees.
The court's conservatives, led by Justice Samuel A. Alito Jr., have signaled that they see these forced fees as unconstitutional because they require some employees to support a cause they oppose.

This is a lawsuit against the CTA, not the AFT/CFT.  However the impact of a negative ruling will be problematic in terms of how Unions can pay for other things like lawyers for grievances and other matters.