has been forced to resign. in the latest sex scandal to hit congress. correspondent shannon breen, what convinced david wu to quit. >> saying the time has come to leave washington embattled democrat, david wu, of oregon a decision to resign. motivated from a significant push from senators murkily and widen. and an after wu did not return their calls, his chief of staff notified they would republican call for his resignation. the statement read in part. accusations against david wu are both jarring and exspgs nahle serious. we believe exno longer be an effective representative for constituents and should in the best interest of oregon step down. wu did confide in fellow house members after allegations surfaced he engaged in an unwanted sexual encounter with a teenager who graduated from