I'm wondering wherther this thread is conflating several issues. First I'm not at all sure why ending foreign aid and deporting foreign criminals would be the cure for the problem of police losing track. The problem may be down to all sorts of factors, such as incompetence, poor liaison between bodies, criminals clever enough to disappear, police being overstretched or prioritising the wrong things- but I can't see what foreign aid for one has any relevance. Okay deporting criminals might free up time but it would bring its own problems. So whilst i wish foreign aid could be cut i don't see the relvance here.
Second, what do we actually mean by foreign crimials. Those here illegally or with foreign passports or within the first few years here- yes, if we can get countries to take them. What about those who have been here 10 years, 20 years. Are we counting those born here? Probably not but one poster has conflated foreign criminals here with Muslim prisoners so maybe that's what some have in mind. If so, how would that work? (Answer- it wouldn't.)