Senate minority leader says debt ceiling talks must focus on spending cuts, a day after Obama targets further tax reformThe Republican co-architect of the deal which meant America avoided the fiscal cliff has ruled out any further tax hikes on the rich, stating that spending cuts must be the focus of looming talks over the debt ceiling.Speaking on ABC's This Week, Senate minority leader Mitch McConnell said the issue of tax revenues was "finished, over, completed", and added that negotiations must now be centered solely on the White House's "spending addiction".The comments, coming from a man who last week worked with the vice-president, Joe Biden, to broker a last-minute agreement to stave off a punitive austerity package that could have plunged America back into recession, will be taken as a drawing of a line in the sand by Republican negotiators.