http://www.motherjones.com/news/dailymojo/2004/03/03_519.html
Both Senator John McCain (R-AZ) and Senator Russ Feingold (D-WI) threatened Wednesday to go to court to force the FEC to crack down on the 527s. Feingold said the FEC must not allow campaign-finance laws to be circumvented.
The six-member, bipartisan Federal Election Commission is scheduled to vote on May 13 on new regulations to restrict fund-raising by the 527 groups. With the unlimited "soft money" contributions to national political parties ostensibly banned by the 2002 Bipartisan Campaign Reform Act (BCRA, also known as the McCain-Feingold law), Democrats are counting on the 527 groups, bankrolled by Soros, Real Networks CEO Robert Glaser, labor unions, and others, to mobilize voters.