But Labour insists it has been pushing for a real terms cut in the EU budget since July, with shadow chancellor Ed Balls saying there had been cross-party support for the idea of reducing EU expenditure at a time of austerity at home.
As candidates across party lines suggest new strategies, like reducing violence and taking troops off the streets, some U.S. lawmakers say they're nervous that cross-border cooperation could wane after Mexican voters pick a new president July 1.