Identity Cards Bill

Is not the problem with the proposed system that the Government cannot control the current passport system? There are lots of forged passports and a good trade in them. They recently told me that they have no idea how many people are eligible to have a national insurance number, let alone what the correlation is between those who have them and those who should have them. Why should we believe that they will be any better at controlling the system if they do not have proper control of the borders and a proper policy on who is eligible to be here?