washington democratic u.s. representative john conyers colleagues congressional black caucus cbc press 88-year-old lawmaker resign amid sexual harassment allegations two senior house democratic aid say tuesday aid ask identify say many lawmakers involve effort confirm report cnn way one aide say democratic representative cedric richmond cbc chairman active move get conyers step end house representatives career begin first election 1964. richmond issue statement meet conyers tuesday say decision resign office ethics investigation complete john decision make richmond say candid conversation conyers seriousness allegations vehemently deny congressional black caucus call congress treat members accuse sexual harassment sexual assault crimes parity call congress public afford members due process serious allegations investigate richmond say michigan congressman longest-serving house member dean cbc aid conyers immediately respond request comment sunday conyers say step senior democrat house judiciary committee pending congressional ethics investigation deny allegations make unwanted sexual advance women work say office resolve harassment case payment admission guilt conyers trouble come sexual harassment accusations recent weeks ensnare former hollywood executive harvey weinstein politicians include republican senate candidate roy moore alabama democratic senator al franken minnesota cbc found 1971 49 members house senate influential voice within democratic party follow conyers announcement sunday step rank house judiciary committee democrat house democratic leader nancy pelosi call zero tolerance sexual harassment conyers resign special election would hold fill seat black caucus members urge u.s. representative conyers resign source