washington colombian president juan manuel santos say friday republican members u.s. congress indicate continue support colombia effort achieve peace leftist rebel recover years civil war comment state department come day president barack obama say plan ask congress 450 million aid help colombia implement peace accord end latin america long war ask whether republicans back administration plan santos tell reporters state department hear one single voice doubt success current u.s. aid effort plan colombia receive expressions continue support say receive formal commitments hop congress would support new proposal colombian leader say receive assurances support republican u.s. lawmakers