Edward Douglass White, Hannis Distilling Company v. Mayor and City Council of Baltimore…
“ The assumption, however, may not be indulged in simply because it appears from the record that a federal question was averred, if such question be obviously frivolous or plainly unsubstantial, either because it is manifestly devoid of merit, or because its unsoundness so clearly results from the previous decisions of this court as to foreclose the subject and leave no room for the inference that the questions sought to be raised can be the subject of controversy. ”
