Today, it's easy for trade associations and major lobbying firms to conceive and fund so-called "grassroots" issue campaigns that bear no mark of their sponsors or betray their Beltway origins. This form of public advocacy has acquired the unflattering appellation of "astroturf" campaigning.
Sens. John McCain and Joe Lieberman want more disclosure and more transparency. They believe that voters are persuaded more easily by arguments that appear to come from "real" citizen-based groups. And that the grassroots lobbying laws are easily abused to allow lobbyists to manipulate both donors and the public.