Felix Frankfurter,
United States v. Rumely — Opinion of the Court
“ If 'lobbying' was to cover all activities of anyone intending to influence, encourage, promote or retard legislation, why did Congress differentiate between 'lobbying activities' and other 'activities * * * intended to influence'? Had Congress wished to authorize so extensive an investigation of the influences that form public opinion, would it not have used language at least as explicit as it employed in the very resolution in question in authorizing investigation of government agencies? Certainly it does not violence to the phrase 'lobbying activities' to give it a more restricted scope. ”
