convicted of a crime
... that in 1904, Joseph R. Burton (R-KS) became the first United States Senator to be convicted of a crime?
... that in 1904, <a href="./Joseph_R._Burton" id="mwCCg" rel="mw:WikiLink" title="Joseph R. Burton">Joseph R. Burton</a> (R-KS) became the first <a href="./United_States_Senate" id="mwCCk" rel="mw:WikiLink" title="United States Senate">United States Senator</a> to be <b id="mwCCo"><a href="./Burton_v._United_States" id="mwCCs" rel="mw:WikiLink" title="Burton v. United States">convicted of a crime</a></b>?