"The most recent attempt to turn the screws on lobbying may be met with constitutional skepticism as a result of the Supreme Court’s January 2010 decision in Citizens United v. Federal Election Commission. Citizens United is almost universally thought of as a campaign finance case, not a lobbying case, but its reach is far wider. Lower courts in two cases we describe further below have already struck down some core lobbying regulations for violating the First Amendment as the Supreme Court interpreted it in Citizens United. More cases could well be decided in similar ways. In the end, the reach of Citizens United may be even broader than most of us initially understood; it may influence not only who gets elected but also the ability of interest groups to pressure Federal officials in connection with particular legislative issues."
Lobbypalooza -- Citizens United affect on lobbying regulations
The American Interest Magazine:
